Abstract
Background
Breast Cancer (BC) is the most frequently occurring cancer among Egyptian women. This study aimed to determine the effectiveness of a health education program on raising the knowledge related to BC, its risk factors, and some related preventive practices among women living in an urban slum area in Alexandria.
Patients and Methods
A pre-/post-test interventional study was conducted during 2009–2010 on a random sample of women aged 30–65 years (n = 486) living in a slum area in Alexandria, Egypt. 20 health education sessions were carried out to educate the women on BC risk factors and some preventive practices. Previously trained nurses educated the sampled women on breast self-examination (BSE). The women's knowledge and opinion about BC and their practice of BSE were evaluated before and 3 months after the intervention.
Results
The findings indicated a significant increase in the mean knowledge score regarding BC and the mean opinion score regarding some BC risk factors. A significant increase in the practice of BSE was observed post intervention.
Conclusion
This study confirms the effectiveness of intervention programs in improving the knowledge about BC risk factors and practice of BSE even in a group of women with a low literacy rate living in a slum area.
Keywords: Breast cancer, Breast self-examination, Breast awareness, Knowledge, Egypt
Abstract
Hintergrund
Brustkrebs (BC) ist die am häufigsten auftretende Krebsart bei Frauen in Ägypten. Ziel dieser Studie war die Bestimmung der Wirksamkeit eines Gesundheitserziehungsprogramms zur Erhöhung der Kenntnisse im Zusammenhang mit BC, dessen Risikofaktoren und einigen BC-bezogenen präventiven Verhaltensweisen bei Frauen, die in einem städtischen Slum-Gebiet in Alexandria leben.
Patienten und Methoden
Eine Prä-/post-Test-Interventionsstudie wurde während der Jahre 2009–2010 bei einer Stichprobe von 30- bis 65-jährigen Frauen (n = 486), die in einem Armenviertel in Alexandria, Ägypten leben, durchgeführt. 20 Sitzungen zur Gesundheitserziehung wurden durchgeführt, um die Frauen über BC-Risikofaktoren und einige vorbeugende Verhaltensweisen aufzuklären. Zuvor ausgebildete Krankenschwestern trainierten die Frauen der Stichprobe in Brustselbstuntersuchung (BSE). Das Wissen und die Meinung der Frauen über BC sowie ihre Praxis der BSE wurden vor der Intervention und 3 Monate danach bewertet.
Ergebnisse
Die Ergebnisse zeigen eine signifikante Zunahme in den Kenntnissen in Bezug auf BC und eine höhere Meinung in Bezug auf einige BC-Risikofaktoren. Nach der Intervention wurde eine deutliche Steigerung in der Praxis der BSE beobachtet.
Schlussfolgerung
Diese Studie bestätigt die Wirksamkeit von Interventionsprogrammen zur Verbesserung der Kenntnisse über Risikofaktoren, BC und die Praxis der BSE auch in einer Gruppe von Frauen mit niedrigem Alphabetisierungsgrad, die in einer benachteiligten Gemeinde leben.
Introduction
Worldwide, breast cancer (BC) represents 10% of all cancers diagnosed annually and constituted 22% of all new cancers in women in 2000, making it by far the most frequently occurring cancer in women. It will also become an important challenge to health services in developing countries in the coming decades [1].
The incidence, mortality, and survival rates for BC vary across the world's regions because of underlying differences in known risk factors, access to effective treatment, and the availability of organized screening programs [2]. Fatality rates tend to be higher in low-resource countries [1].
In Egypt, cancer registries reveal that BC is the most frequently occurring cancer among women, representing 18.9% of the total cancer cases (35.1% in women and 2.2% in men), with an age-adjusted rate of 49.6 per 100.000 persons [3]. BC among Egyptian patients has a younger age distribution, with the majority of cases occurring at 30–60 years of age. The median age at diagnosis is 49 years, 1 decade younger than the corresponding age in Europe and North America [4].
The etiology of BC is multi-factorial and cannot be directly linked to any single factor. The epidemiological literature supports a highly complex interplay between different exposures and host characteristics and between exogenous and endogenous hormones and an individual's genetic makeup [5]. A woman's age is the strongest risk factor for BC, and older women have a 10 times increased risk compared with younger women. Reproductive risk factors associated with the risk of BC include: menarche before the age of 11 years, menopause after the age of 54 years, and an age greater than 40 years at first full-term pregnancy [6]. The higher the number of full-term pregnancies, the greater the protection. Women who breastfeed have a reduced risk compared with women who do not breastfeed [7]. Current knowledge suggests that oral contraceptive use is one of the weakest risk factors for BC [5].
Prevention or identification of BC at an early stage is of paramount importance in saving and improving the quality of life. Breast health awareness appears to be a pragmatic method for this. Creating breast health awareness appears to be an important prerequisite for early detection of BC in low-income countries [8]. Although breast awareness has long been advocated as a health promotion intervention in many parts of the world, evidence suggests that women in general are still not breast aware.
Methods for early detection must be considered the best second choice for reducing the mortality, amongst which breast self-examination (BSE), clinical breast examination (CBE) by the treating physician, as well as ultrasound and mammography, are the secondary preventive methods used for screening in the early detection of BC [9]. According to the American Cancer Society (ACS), BSE is an option for women starting from the early 20's [10].
The combination of BSE and CBE seems to be an important available alternative in slum areas [11]. In areas where access to CBE and mammograms is difficult, BSE still detects BC early enough for treatment options.
BC is usually diagnosed at an advanced stage in Egypt, and studies revealed that population screening is rarely practiced in Egypt [9, 12, 13, 14]. Women living in slum areas suffer from the unavailability of services and poor health [15].
Given the importance of the BC problem in Egypt in terms of magnitude and severity, and that only few studies examined the awareness of BC among Egyptian women [16], this study was performed to evaluate the effect of a breast health awareness intervention program on the knowledge of a sample of women living in an urban slum area in Alexandria, Egypt.
Patients and Methods
Study Population
A random sample of 486 women living in the chosen area, in the age group of 30–65 years, was selected to participate in the study. Selected women who accepted to participate were invited to attend the intervention.
Design and Sampling Technique
A pre-test and post-test interventional study was conducted to evaluate the effects of BC and the BSE education program on a sample of women living in an urban slum area in Alexandria, Egypt. There is no accurate data about the population in these slums [17]. Based on the estimates available, a systematic random sampling of the houses (every 3rd house) in the area was used.
Before attending the health education sessions, women were interviewed to complete a pre-designed questionnaire. The questionnaire was designed after reviewing by 3 Egyptian experts [18, 19]. The questionnaire was composed of 2 parts: The first part is used to investigate the socio-demographic data, some BC risk factors, and the family history among first- and second-degree relatives. The second part included questions about the knowledge of BC and the practice of BSE. The questionnaire was reused after 3 months from the end of the intervention (post-test).
Intervention
In a 2-day program, 5 affiliated nurses were trained by doctors on the correct time of the month to perform BSE, the steps of BSE, the proper patterns for palpating breast tissue, and the 3 early-detection guidelines as cited by the ACS [20].
The intervention was conducted in non-governmental organization (NGO) premises in the slum area. Over a period of 6 months, each week about 25 women were invited to attend the health education sessions. The sessions included interactive lectures and group discussions carried out by an oncologist, followed by training on BSE demonstrated by the trained nurses. The nurses used breast models to explain the BSE technique.
Data Analysis
Statistical analysis was performed using the SPSS program version 14. The knowledge score questions were measured by 0 and 1 categories, where 1 referred to the correct answer. A total knowledge score of 7 was calculated. The women's knowledge on BC risk factors was evaluated by calculating the proportion of women who recognized the correct answers on some BC risk factors before and after the intervention. In addition, the women were asked if they agreed or disagreed with some statements, to evaluate their opinion about some risk factors of BC and the preventive practices. The opinion score questions were measured on a 0–3 scale, where 3 was the most satisfactory answer, giving a total score of 18.
The McNemar test was used to compare the answers in the pre- and post-tests, while the paired t-test was used for comparison of the total scores. Logistic regression analysis was performed to detect the factors associated with performing BSE and the change in opinion scores after the intervention.
Results
The majority of the sampled women were currently married (84.6%), with a mean age (± standard deviation (SD)) of 43.2 years (± 9.01). About 3/4 of the study participants were illiterate and 96.1% of them were housewives (table 1).
Table 1.
Characteristic | Frequency | Percentage |
---|---|---|
Marital status | ||
|
4 | 0.8 |
|
411 | 84.6 |
|
71 | 14.6 |
Women's age, years | ||
|
83 | 17.1 |
|
189 | 38.9 |
|
149 | 30.7 |
|
65 | 13.4 |
Women's education | ||
|
363 | 74.7 |
|
50 | 10.3 |
|
73 | 15.0 |
Women's occupation | ||
|
467 | 96.1 |
|
14 | 2.9 |
|
5 | 1 |
Total | 486 | 100 |
Some Reproductive Characteristics and Influencing Factors of BC
The age of menarche for 39.1% of the women was < 13 years. The mean age of marriage (± SD) of the ever-married participants was 19.3 (± 3.9) years. Among the ever-married women, 97.5% had a history of at least 1 pregnancy, with 44.7% of them reporting to have 3 or 4 children (the mean number (± SD) of children was 4.1 (± 2.1)).
About 90% of the sampled women reported that they breastfed all their children. The majority of the women reported on ever use of contraception (90.9%), with hormonal contraception ever used by 38.1% of them. Only 8.6% of the women previously attended health education sessions. About 8.2% of the women had a family history of BC, with a minor percentage reporting to have had any treatment of breast symptoms (table 2).
Table 2.
Characteristics | Frequency (n = 486) | Percentage |
---|---|---|
Family history of BC | ||
|
40 | 8.2 |
|
446 | 91.8 |
Husbands’ smoking status (n = 416)a | ||
|
198 | 47.6 |
|
218 | 52.4 |
History of treatment for breast symptoms | ||
|
24 | 4.9 |
|
462 | 95.1 |
History of treatment for gynecological symptoms | ||
|
255 | 52.5 |
|
231 | 47.5 |
Ever use of contraception (470) | ||
|
428 | 90.9 |
|
42 | 9.1 |
Number of children (470) | ||
|
97 | 23.2 |
|
217 | 44.7 |
|
156 | 32.1 |
History of hormonal treatment | ||
|
28 | 5.8 |
|
458 | 94.2 |
Included only married and divorced women.
BC Knowledge and Women's Opinion pre/post Intervention
Prior to the intervention, only 18.3% of the study participants knew that all women are at risk of BC. The proportion of women who recognized a positive family history and menopause as risk factors of BC were 66% and 52%, respectively. The total knowledge score of the participants (± SD) was 2.77 (± 1.2). Post intervention, the mean total knowledge score increased significantly (2.77 ± 1.24 pre intervention vs. 3.77 ± 0.87 post intervention; p < 0.001). Obesity and early menarche were not perceived as risk factors of BC by about 1/3 of the sample, without significant changes between the pre and post data. Knowledge of the other risk factors showed significant changes between the pre- and post-test (p < 0.05). The remaining risk factors were acknowledged by > 50% of the women in the post-test (table 3).
Table 3.
Risk factor | Pre-test, correct responses | Post-test, correct responses | p value* | ||
---|---|---|---|---|---|
n | % | n | % | ||
All women at risk of BC | 89 | 18.3 | 119 | 24.5 | 0.022 |
Women with family history of BC | 322 | 66.3 | 426 | 87.7 | < 0.001 |
Women without children | 150 | 30.9 | 257 | 52.9 | < 0.001 |
High age at first delivery | 208 | 42.8 | 261 | 53.7 | 0.002 |
Women post menopause | 253 | 52.1 | 285 | 58.6 | 0.031 |
Obese women | 181 | 37.2 | 166 | 34.2 | 0.337 |
Early menarche | 143 | 29.4 | 127 | 26.1 | 0.244 |
Mean total knowledge scorea (SD)** | 2.77 (1.24) | 3.77 (0.87) | < 0.001 |
McNemar test, p significant at < 0.05.
Paired samples t-test, p significant at < 0.05.
Knowledge score measured on a 0–1 scale for each item, and the total for all items is 7.
The opinion of the sampled women regarding some risk factors and preventive practices for BC showed a rather high mean (± SD) total opinion score before the intervention (11.3 ± 4.0), with significant improvement in their mean (± SD) total opinion score post intervention (12.9 ± 2.8). Significant improvement in the mean opinion score was also noticed for the role of genetics, advancing age, effect of breastfeeding, effect of regular exercise, and practice of BSE (table 4).
Table 4.
Risk factor | Pre-test, mean (SD) | Post-test, mean (SD) | p value* |
---|---|---|---|
Genetic role | 1.90 (1.3) | 2.37 (1.1) | < 0.001 |
Age role | 1.04 (0.9) | 1.26 (0.9) | < 0.001 |
Role of psychological factors | 1.93 (1.2) | 1.83 (1.1) | 0.192 |
Effect of breastfeeding | 2.32 (1.1) | 2.44 (0.8) | 0.043 |
Effect of regular exercise | 1.96 (1.2) | 2.38 (0.9) | < 0.001 |
Regular BSE | 2.20 (1.2) | 2.55 (0.9) | < 0.001 |
Mean total opinion scorea (SD)** | 11.30 (4.0) | 12.90 (2.8) | < 0.001 |
McNemar test, p significant at < 0.05.
Paired samples t-test, p significant at < 0.05.
Opinion score measured on a 0–3 scale for each item, and the total for all items is 18.
Overall, significant improvement was shown in the percentage of women who knew how to perform BSE and in the percentage of women who ever practiced BSE after the intervention (table 5).
Table 5.
Variable | Pre-test | Post-test | p value* | ||
---|---|---|---|---|---|
n | % | n | % | ||
Know how to do BSE | |||||
|
64 | 13.2 | 485 | 99.8 | < 0.001 |
|
422 | 86.8 | 1 | 0.2 | |
Last time for practicing BSE | |||||
|
9 | 1.9 | 34 | 7.0 | < 0.001 |
|
17 | 3.5 | 353 | 72.6 | |
|
30 | 6.2 | 97 | 20.0 | |
|
430 | 88.4 | 2 | 0.4 | |
Total | 486 | 100.0 | 486 | 100.0 |
McNemar test, p significant at < 0.05.
According to statistical regression analysis, a history of treatment of breast symptoms was associated with a higher knowledge score after the intervention. Furthermore, the women's total opinion score concerning risk factors was the only significantly associated factor with the practice of BSE during the last 6 months.
Discussion
The present study revealed that, in spite of the low education level (75% women were illiterate or could just read and write) and low information about BC and BSE, the intervention dramatically changed the participants’ knowledge on risk factors and BSE. A significant improvement was observed in the women's knowledge score regarding risk factors.
The present findings illustrate the unsatisfactory basic knowledge of the sampled women on BC risk factors prior to the intervention. This may be due to the shortage of BC-related health education programs in primary health care facilities and in the media [21]. Women's limited knowledge on BC has been identified elsewhere in developed and developing countries [22].
Similar to the present findings, many studies from both developing and developed countries illustrated the effectiveness of intervention programs in increasing the knowledge on BC, its risk factors and the awareness for BC screening [23, 24]. The pre-intervention mean opinion score of some protective factors like breastfeeding was relatively high, reflecting cultural and religious factors encouraging breastfeeding [25].
The participants showed poor understanding of some BC risk factors, specifically obesity and early menarche. This may be explained by the local culture where obesity and early menarche are seen as signs of fecundity and good health.
Although the effectiveness of BSE remains controversial [26], it holds some promise of early detection of BC, especially in areas where secondary intervention facilities are scarce [27].
In conclusion, the results of this study confirm that an intervention program on BC improves the knowledge scores of the risk factors and BSE practice even in a group of women with low literacy rate living in slums.
Disclosure Statement
The authors report no conflicts of interests.
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