Abstract
Objective
To assess the type and quality of the studies evaluating the effects of electronic media-based interventions on health and safety behavior change.
Data Sources
Studies were identified from searches in MEDLINE (1950 to September 2010) a and PsycINFO (1967 to September 2010).
Study Selection
Included were published studies of interventions that used electronic media and focused on health/safety behavior change in children aged 18 years or younger.
Intervention
Electronic media-based intervention.
Main Outcome Measure
Health or safety behavior change.
Results
Nineteen studies met criteria and focused on at least one behavior change outcome. Of these studies, 7 employed interventions related to physical activity and/or nutrition, 6 focused on asthma, 3 focused on safety behaviors, 2 focused on sexual risk behaviors, and 1 targeted diabetes. Seventeen studies reported at least one statistically significant effect on behavior change outcomes, including an increase in fruit, juice, or vegetable consumption, an increase in physical activity, improved asthma self-management, acquisition of street and fire safety skills, and sexual abstinence. Only five of the 19 studies were rated as being of excellent quality.
Conclusions
Our systematic review suggests that interventions using electronic media can improve health/safety behaviors in young people. However, there is a need for higher quality, rigorous interventions that promote behavior change.
Keywords: adolescent, child, health behavior, health promotion, behavior therapy, randomized controlled trials, videogame
Introduction
Traditional forms of electronic media, such as TV and radio, have been shown to encourage behavior change. Previous studies have demonstrated that their use can increase physical activity1 and reduce disruptive behavioral problems.2 However, other types of media, such as computer or videogames, may be more effective in producing behavior change in that they encourage active engagement and processing of information from the child. On any given day, 60% of young people play videogames, including 47% who play on a handheld player or a cell phone, and 39% who play on a console player. Additionally, ninety-nine percent of teenage boys and 94% of teenage girls play videogames.3 Given their widespread use and interactive capabilities, computer and videogames are an increasingly popular type of electronic media used in health interventions and have been a successful tool for health promotion and management of chronic medical conditions in children and adolescents.4,5 Although they did not meet the strict criteria for the current review, two papers6,7 describe how videogame interventions target smoking cessation and asthma in adolescents.
Electronic media-based interventions lend themselves to experiential learning and, when created according to established health promotion and instructional design principles, offer distinct advantages over conventional methods of health education.4 Because of their repetitive nature, electronic media-based interventions have the ability to expose the individual to educational content to reinforce learning. Additionally, electronic media-based interventions can be personalized through the creation of avatars and virtual identities. Lastly, these interventions have interactive capability that can provide immediate feedback and increase player engagement. Accordingly, electronic media-based interventions may be an ideal platform for improving health outcomes for adolescents. However, little research has been done on the efficacy of electronic media-based interventions, especially on their effect on health or safety behavior.
The aim of this study is to systematically review the literature to identify and evaluate electronic media-based interventions focused on promoting health and safety behavior change in youth. While several recent systematic reviews8–10 have been conducted to evaluate the effectiveness of electronic media-based interventions on health outcomes, these reviews were limited to videogames only as the form of intervention 12,13 or to only one specific health outcome. In addition, many reviews did not include safety behavior outcomes,13,14, 8–10 or youth populations.8 The current review expands upon previous reviews by including studies that specifically focus on youth, use electronic-media-based interventions as part of the study, and examine both health and safety behavior outcomes.
METHODS
Search Strategies
We conducted a search on September 29, 2010 of the electronic databases MEDLINE (from1950) and PsycINFO (from 1967) through September 2012 for published studies. Keywords used to locate the studies including the Specific Medical Subject Headings, terms, and text words in MEDLINE and PsycINFO (Table 1) used to describe concepts of Multimedia/Games and Health Behavior. We used the search terms to include the domains of: health behavior, multimedia/games, and children. Our search was limited to the English language, randomized controlled trials, and all children ages 0–18 years.
Table 1.
Concept | Terms | Text Words |
---|---|---|
| ||
Medline | ||
Multimedia/Games | Videogames | videogame$, videogame$, multimedia game$, computer game$, interactive game$, educational game$, health game$, online game$, learning game$, exergame, interactive computer, interactive game |
Health Behavior | Risk reduction behavior, health promotion, health behavior, health education, consumer health information, patient education as topic, sex education | Risk$ reduction, risk$ behavior, risk$ prevent$, health promot$ behavior |
PsycINFO | ||
Multimedia/Games | Simulation games, role playing games, computer simulation, computer games | Videogame$, videogame$, multimedia game$, computer game$, interactive game$, educational game$, health game$, online game$, learning game$, exergame, interactive computer, interactive game |
Health Behavior | Health behavior, health promotion, behavior change, health education, risk taking | Health promot$, health behavior, risk$ reduction, risk$ behavior, risk prevent$ |
Inclusion Criteria
Published studies were included if they met all of the following five criteria: 1) English language; 2) human subjects; 3) youth sample (≤ 18 years old for MEDLINE, ≤ 17 years old for PsycINFO); 4) focus on health behavior change, safety, or education; and 5) incorporation of an electronic media-based intervention.
Through an electronic review process, four reviewers independently applied these criteria to all abstracts. If it was not clear from the abstract alone whether it met inclusion criteria, the full paper was reviewed by the team. Selected bibliographies were reviewed for additional manuscripts. To assess reviewer agreement with the abstract review process, each author independently conducted a ten percent random review of the abstracts (N = 41). This determined a simple kappa statistic of 0.66 indicating fair to good agreement between reviewers.11 In addition to this kappa score, in cases of disagreement, the reviewers opted to examine the full papers and in reviewing the full papers, 100% consensus was reached on whether a paper should be included in the overall review.
Data extraction
Before extracting data, we piloted and revised extraction forms as a group prior to applying to all publications. The following data were extracted by the four reviewers: target health condition, target health change, type of electronic media, demographics, treatment setting, length of follow -up, and descriptions of interventions and outcomes. When reported, quantitative data including appropriate statistical test results for outcomes were extracted. We defined electronic media as interactive content that is accessed electronically, including content through computer and video console games, video clips, CD-ROM, and the internet. Additionally, we evaluated change in behavior as it related to a health or safety measure.
Quality of evidence
We used the Oxford Quality Scoring System12 to evaluate the quality of each study. This three item instrument was developed specifically to assess the quality of randomized controlled trials and has been used in many studies.13–15 Advantages of this scale include that it is easy to use, has established reliability and external validity, and contains many of the important elements that have been shown to correlate with bias.7 Each researcher independently evaluated each study by allocating points for quality related to randomization, blinding, and inclusion of a description of participants who withdrew or dropped out of the study. Studies with a score of 0–2 were considered poor quality and those with a score of greater than 2 were considered excellent quality.
RESULTS
The search identified 516 abstracts. After excluding duplicates (n=110), 406 abstracts remained. Fifteen additional manuscripts were identified through review of bibliographies, resulting in a total of 421 articles. Of the 421 abstracts, we excluded those which were not in English (n=15), with a non-Human (n=1) and non-child focus (n=43), lacking a health/safety behavior change or health education-targeted intervention (n=309), which was electronic-media-based (n=25).
One manuscript described two distinct studies16 and two manuscripts described the same study, which resulted in the identification of 28 unique eligible studies (Figure 1). Because we were interested in studies that included actual behavior change outcomes, we restricted our analysis to studies that included at least one behavior change outcome. We defined a behavior change outcome as an outcome that included an observable and measurable modification of an action by a person that related to health or safety promotion. Of the 28 eligible studies, 1917–35 studies included at least one health/safety behavior change outcome. The remaining 916,36–42 studies included outcomes that were related to behavior change such as knowledge, self-efficacy, attitudes, and perception, but lacked a behavior change outcome.
Description of studies with behavior change outcomes
The 19 studies that included a behavior change outcome varied substantially in target condition, study design and outcome measures (Table 2). To maximize clarity, we organized our findings by health or safety condition. A complete table is available online (eTable 1). In summary, 7(37%)29–35 studies employed interventions aimed to improve physical activity and/or nutrition, 6 (32%)23–28 asthma or lung function, 3 (16%) 20–22 safety behaviors 2 (11%) 18,19 sexual risk behaviors, and 1 (5%)17 diabetes. Study settings included clinical (n=7), school (n=7), home (n=3), and other settings (n=2). Seventeen studies (89%) reported the age range of subjects, which ranged from 3 years23 to 18 years. 19,31,32 Two studies18,33 reported the mean age of subjects (m=12.47 years, m=13 years) and reported that subjects in the studies were middle school students. The number of participants in the studies ranged from five20 to 1876 participants.29 Eleven (58%) of the studies20–23,25–29,34,35 employed computer games or simulator as the media structure for their intervention, 3 (16%) studies17,24,31 utilized console videogames, 2 (11%) studies30,32 included an internet -based program, game or virtual reality world, 2 (11%) studies19,33 incorporated video clips or an interactive video as part of their intervention program, and 1 (5%) 18 integrated computer -based elements into the intervention. Follow-up duration varied from 1 week20,22 to 15.6 months. 28
Table 2.
Source(Quality Score) | Setting/ Subjects | Media Type | Research Design | Intervention | Control | Results/Conclusions * |
---|---|---|---|---|---|---|
Nutrition/Physical Activity | ||||||
Cullen et al,34 2005 (2) | School; N = 1578 (8-12y) | Computer game | RCT-cluster design | Game play: 10 25 min sessions for 5 wks | No Game | Intervention group consumed more FJV, fruit servings, 100% juice |
Dunton et al,33 2009 (1) | School; N=683, (M=12.5y) | Video clips | Pilot with pre/post-test | Teacher delivered curriculum w/video clips for 8 sessions | N/A | Intervention group had increased physical activity, daily dairy; decreased TV/DVD and videogame playing/nonschool-related computer use and sweets/sugar intake |
Goran et al,35 2005 (2) | School; N= 209 (8.8-11y) | Computer game | RCT-cluster design | Game play/educational lessons for 8 wks | Educational CD-ROM | Intervention group had decreased BMI in girls but not boys |
Jago et al,32 2006 (2) | Boy Scouts; N =473 (9-18 y) | Internet | RCT | Internet-based program 2x wk for 9 wks | Fruit & vegetable intervention | Intervention group had increased light physical activity and decreased sedentary behavior |
Madsen et al,31 2007 (0) | Home; N= 30 (9-18y) | Videogame | Pilot with pre/post- test | Videogame 30 min/d, 5d/wk for 2 mos | N/A | No statistically significant changes in BMI |
Moore et al,30 2009 (0) | School; N = 126 (9-11y) | Internet game | Quasi- experimental pilot with pre/post-test | Game play for 6 classes over 3 mos period | Didactic presentation of game | Intervention group had increased pre- and post-game measures of self-care behavior, physical activity, and mean systolic blood pressure |
Turnin et al,29 2001 (1) | School; N = 1876 (7-12y) | Computer game | RCT | Game play and nutritional teaching, 2 hrs/wk for 5 wks | Teaching only | Intervention group had more carbohydrate, less fat, less protein, less saccharose, more calcium, more fiber |
Asthma/Lung Function | ||||||
Bartholomew et al,28 2000 (2) | Clinic; N =133 (7-1y) | Computer game | Randomized trial with pre/post-test | Game play at visits, 40 mins | Usual care | Intervention group had lower post-test symptoms scores, moderated by asthma severity |
Huss et al,27 2003 (3) | Home; N=148 (7-12 y) | Computer game | RCT | Game play/education | Education only | No statistically significant changes in asthma symptoms |
McPherson et al,26 2006 (3) | Clinic; N=101 (7-14 y) | Computer game | RCT | Game play/asthma booklet, 90 mins, | Asthma booklet only | Intervention group had lower oral steroid use |
Rubin et al,25 1986 (3) | Clinic;, N = 65 (7-12y) | Computer game | RCT | Game play, 45 min every 6 wks for 10 mos | Non-asthma computer game | Intervention group had higher asthma behavioral child assessment score |
Shames et al,24 2004 (2) | Home; N =119 (5-12y) | Console videogame | RCT | Disease management program w/ videogame | Usual care/ videogame | No statistically significant changes in asthma symptoms/clinical outcomes |
Vilozni et al,23 2001 (2) | School; N=112 (3-6y) | Computer game | RCT with cross over | Game play for 1 session of 5–10 min | Candle blowing simulation | Intervention group achieved successful spirometry |
Safety Behaviors | ||||||
Coles et al,22 2007 (1) | Clinic; N=32 (4-10y) | Computer game | Randomized pilot with pre/post-test | Game play until mastery of skills (<30 mins) | N/A | No statistically significant differences with fire and street safety game play |
Fisher et al,21 2002 (0) | Driver’s education course; N=45 (16-17y) | Computer simulator program | Controlled study | Computer-based training/driving simulator, 90 min session | No training | Intervention group successfully applied the brakes |
Padgett et al,20 2006 (0) | Clinic; N=5 (5-7y) | Computer game | Pilot with Pre/post-test | Game play until mastery of skills | N/A | No statistically significant changes with fire safety game play |
Sexual Risk Behaviors | ||||||
Downs et al,19 2004 (3) | Clinic/ hospital; N =300 (14-18 y) | Interactive video | RCT | Interactive video, 30 min session | Content-matched book/brochure | Intervention group reported more complete sexual abstinence, fewer condom failures, and less STI diagnosis |
Tortolero et al,18 2010 (3) | School; N =907(M=13y) | Computer based program | RCT | Computer-based activities, 12 45 min lessons; 6 homework activities | Regular health classes | Intervention group less likely to have initiated oral, vaginal, or anal sex by 9th grade |
Diabetes | ||||||
Brown et al,17 1997 (1) | Clinic; N = 59 (8-16y) | Console videogame | RCT | Game play at home, (unrestricted game play) | Non-health related game | No statistically significant differences in diabetes outcomes |
Only statistically significant (p<0.05) and medium-large effect sizes reported; Abbreviations: FJV, fruit, juice, vegetable: STIs, sexually transmitted infections
Target Conditions
Nutrition/Physical Activity
Seven studies29–35 reported behavior change outcomes related to nutrition and physical activity. Three (43%) of the studies included a computer-based game, one (14%) utilized a console videogame, one (14%) employed an internet-based program, one (14%) incorporated an internet game, and one (14%) integrated video clips as part of the intervention. Five studies included a control group. Outcomes evaluating dietary intake included consumption of fruit, vegetables, 100% juice, dairy, sweets/sugars, carbohydrates, fat, protein, and fiber. Other outcomes related to nutrition included nutrition self-care practices and nutritional status. Two studies29,34 reported significant increases in fruit and vegetable consumption, (fruit, 0.26±0.05, p<0.001; vegetables, 0.06 ±0.03, p<0.05), (fruits and vegetables, 80.4% vs. 76.1%, p=.05), respectively. One study34 also found a statistically significant increase in 100% juice consumption (p<0.05) in experimental subjects when compared to the control subjects. One study33 reported an increase in daily diary product consumption (p=0.001) and a decrease in daily consumption of sweets/sugars (p<0.001). Another study29 found significant differences in dietary intake between the experimental and control group in relation to more carbohydrate (46.4% vs. 45.7%, p<0.05), less fat (37.1% vs. 37.6%, p<0.05), less protein (16.5% vs. 16.7%, p<0.05), less saccharose (11.5% vs. 12.2%, p<0.001), more calcium (771 mg vs. 731 mg, p<0.001) and more fiber (12.6 mg vs. 12.1 mg, p<0.05). One study30 reported significant differences in nutrition self -care behaviors pre-and post -intervention (p<0.05).
Outcomes related to physical activity included changes in sedentary behavior, physical activity, Body Mass Index (BMI) and systolic blood pressure. Two studies32,33 found that experimental subjects increased their physical activity (p=.024; p=.011, respectively) and decreased their sedentary behaviors (TV/DVD watching, p=.024), (computer use, p=.002), (all sedentary behaviors, p=.051). Finally, one study35 reported a significant treatment effect for obesity reduction in girls (BMI)(0.69 ±0.04 in control vs. 0.62 ±0.04 in intervention), and one study30 reported a significant difference in subjects’ systolic blood pressure (113.9 vs. 108.0; Cohen’s d=0.578, p<.001) pre- and post-intervention.
In the four studies that focused on increasing physical activity in youth, reducing sedentary behavior was discussed, including reducing activities involving electronic media, such as computer use and playing video games. One study,31 which used an interactive dance video as their intervention to reduce BMI in youth, acknowledged that videogames may also increase sedentary time. While this study did not find an association between game play and BMI reduction, two studies32,33 reported a statistically significant reduction in sedentary behaviors.
Asthma/Lung Function
Six studies23–28 reported behavior change outcomes related to asthma or lung function. Five (83.3%) of the studies utilized a computer-based asthma game as part of the intervention, and one (16.6%) utilized a console videogame. All six studies included a control group. Outcomes evaluated included asthma self-management skills, asthma symptoms, doctor visits, hospital visits, oral steroid use, school absence, and spirometry performance. Two studies25,28 reported significant increases in asthma self-management skills in the experimental group compared to the control group ((mean ±SD) in intervention (64.1±7.7) vs. control (57.8±8.8), p=0.008; effect size =0.44, respectively). One study28 found that experimental subjects had lower asthma symptoms scores following the intervention (t(116) = −1.96, p=.02), significantly lower clinical appointment return rate (p=.04), and children younger than 12 had fewer hospitalizations in the intervention group as compared to the control group. One study26 report ed lower use of oral steroids in the intervention group as compared to the control (OR 2.96, 95% CI 1.014–8.612, p=.03). Additionally, one study23 reported successful spirometry performance in the experimental group as compared with the control group (p=.002).
Safety Behaviors
Three studies20–22 examined behavior change outcomes related to safety behaviors. Two (66%) of the studies utilized a computer-based game about fire and/or street safety skills as part of the intervention, and one (33%) utilized a computer driving simulator program. One study included a control group. Outcomes evaluated included street and fire safety behavior skills and driving performance on a computer simulator. One study20 reported that all children in the study (N=5) reached 100% accuracy on completing each of the fire safety skills one week after playing the videogame. Similarly, another study22 reported that 87.5% of subjects were able to perform three out of four steps correctly immediately following the learning session on fire safety skills and 81.3% on street safety skills. At one week post-intervention, 81.3% were able to perform three out of for steps correctly on fire safety skills, and 75.1% of fire safety skills. One study 21 found that computer-based training improved the driving skills of younger inexperienced drivers.
Sexual Risk Behaviors
Two studies18,19 reported behavior change outcomes related to sexual risk. One study 19 used an interactive video about sexually transmitted infections (STIs) as part of the intervention, and one study18 utilized computer -based activities as part of a sexual risk reduction program. Both studies included a control group. Outcomes evaluated included sexual initiation, condom use, and STI acquisition. One study19 found that experimental subjects were more likely to be completely abstinent from sexual activity from baseline to 3 months (OR=2.50, p=0.027). Additionally, this study found that subjects in the experimental group reported fewer condom failures compared to controls (p=−0.02) and were less likely to report STI diagnosis (OR=2.79, p=0.05). Another study18 reported that subjects in the control group were more likely to have initiated oral, vaginal, or anal sex by the 9th grade (29.9% vs. 23.4%, ARR 1.29; 95% CI: 1.02–1.64 than students in the intervention group. Additionally, students in the control group were more likely to have initiated oral sex (17.6% vs. 10%, ARR 1.76; 95% CI: 1.21–2.56) and to have initiated anal sex (9.9% vs. 3.7%, ARR 2.67; 95% CI: 1.45–4.94) by ninth grade than those in the intervention group.
Diabetes
One study17 reported behavior change outcomes related to diabetes using a console videogame as its intervention and compared results in a control group. While the results did not reach statistical significance, both self-efficacy ratings of diabetes self-care and urgent doctor visits for diabetes-related problems improved (p=0.08). In addition, Hemoglobin A1C increased in both the experiment and control groups.
Quality of evidence
Five of the 19 studies received a quality score of 3 out of 5 possible points, indicating excellent quality.18,19,25–27 The remaining 14 studies received a quality score ranging between 0–2, indicating poor quality. All of the five studies that received a score of a “3” received one point each for describing the study as randomized and how the randomization was done and one point for a description of subject withdrawals or dropouts. All of the 6 studies that received a score of “2” received one point for describing the study as randomized and one point for describing withdrawals or dropouts. Of the studies that received a score of “1”, three received one point for describing the study as randomized and one study received one point for a description of subject withdrawals or dropouts. None of the studies described blinding. There was generally good agreement between researchers on quality score ranking. When there was not 100% agreement, differences between reviewers were resolved by consensus.
COMMENT
The current review revealed that electronic media interventions have been developed and examined for an array of conditions that are potentially highly relevant and important to the care of youth. Of the 19 studies included in the current review, 17 reported a statistically significant change in health or safety behavior. These results, however, should be interpreted with caution given that the quality assessment of these studies found most of them to be of poor quality. Of the five studies18,19,25–27 that were of excellent quality, four18,19,25,26 found statistically significant differences in the treatment group as compared with the control group. While the current review provides support for the use of electronic media for behavior change in youth, it also highlights, based on the quality assessments, that few scientifically rigorous evaluations of electronic media for targeted behavior change in this age group have been conducted.
Although electronic media-based interventions have the potential to promote health and safety behaviors in youth, there may be some potential limitations for accessing these types of interventions outside of school. Because youth from lower income environments are slightly less likely than youth from higher income environments to go online or to report owning a computer,43 they may have limited access to internet and computer -based interventions. Videogames, however, occupy a prominent position in American life and appear to cross demographic lines with ixty percent of blacks, 61% of whites, and 55% of Hispanics report interactive game playing.44 Video game playing extends across economic lines as well and is reported by 58% of those with household incomes under $35,000.3
Our review has several important limitations. The limited number of randomized controlled trials and heterogeneity of interventions, settings, and behavior change outcomes make it difficult to draw comprehensive conclusions. We were also limited by the variability in the quality of the studies in terms of our ability to determine the efficacy of the different interventions. The primary concerns about study quality centered around external validity, such as failure to report the description of randomization or withdrawals and dropouts. Notably, none of the studies included in this review were blinded, which also reduced their quality rating. Finally, the majority of the data collected specific to behavior change outcomes is based on self-report of the study subjects.
In summary, our study highlights several key gaps in the existing literature. Given their potentially broad applicability, higher quality evaluations of existing electronic-media-based interventions are needed. Of the five studies that received an excellent quality rating, four studies18,19,25,26 reported a statistically significant change in asthma or sexual risk related behavior. These studies provide excellent models of electronic media-based interventions that created behavior change in youth. Specifically, these interventions showed improvement in self-management and risk reduction behaviors in young adolescents, which may be an age group that is most amenable to adopting positive health and safety behaviors. We identified a paucity of studies focusing on unintentional injury prevention and promoting decreased alcohol and drug use among youth, despite their significant morbidity and mortality among this demographic. Our review demonstrates a need to assess the effectiveness of using electronic-media-based interventions in different settings. Given their promise for promoting improved health and safety behavior change among youth in various settings, future research should focus on developing, rigorously evaluating, and implementing electronic-media-based interventions.
Supplementary Material
Acknowledgments
This study was supported by grant NICHD R01 HD062080-01 from the Eunice Kennedy Shriver National Institute of Child Health and Human Development, the Yale Robert Wood Johnson Foundation Clinical Scholars Program and the United States Veteran Affairs. Dr. Lynn E. Fiellin, M.D., Principal Investigator had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
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