Table 1.
Study characteristics and effects of studies from the original (before 2004) and updated review (after 2004) compared
| Dietary behavior | Physical activity | |||
|---|---|---|---|---|
| Before 2004 (N = 26) | After 2004 (N = 34) | Before 2004 (N = 10) | After 2004 (N = 29) | |
| Reference numbera | Reference number | Reference numbera | Reference number | |
| N (%) | N (%) | N (%) | N (%) | |
| Comparison of computer-tailored intervention with a no intervention control group | [33–35, 39, 42–44, 46–48, 50–56, 60] | [29–31, 34, 36, 53, 60, 65, 70, 71, 74, 78, 79, 82] | [33–35, 38] | [22, 23, 34, 36, 37, 60, 62–65, 74] |
| 18 (69 %) | 14 (41 %) | 4 (40 %) | 11 (38 %) | |
| Comparison of computer-tailored intervention with a generic health education control groupb | [30–32, 40–42, 45, 54–56] | [24–26, 32, 33, 38, 39, 55, 56, 71–73, 75, 80, 81, 95] | [28–30, 32, 37, 38] | [24, 25, 32, 33, 35, 56, 59, 61, 66–69, 95–98] |
| 10 (38 %) | 16 (47 %) | 6 (60 %) | 16 (55 %) | |
| Objective measurements of effect indicators | [39, 50–52] | [24, 25, 34, 53, 56] | [24, 27, 28, 34, 35, 37, 66, 67, 69, 98] | |
| 4 (15 %) | 5 (15 %) | 0 (0 %) | 10 (34 %) | |
| Inclusion of long-term (≥ 6 months) follow-up | [32, 33, 36, 43, 46] | [24–32, 34, 38, 39, 55, 56, 65, 70, 71, 75, 78–81, 95] | [28, 32–34, 36, 37] | [23, 27, 28, 32, 34, 35, 56, 61, 65, 67–69, 71, 95] |
| 7 (27 %) | 23 (68 %) | 6 (60 %) | 14 (48 %) | |
| Significant effects of computer-tailored interventions found | [30, 35, 39, 41, 43, 47, 49, 53, 56] | [24–34, 36, 38, 39, 55, 56, 60, 65, 70–75, 78–81] | [29, 35] | [22–25, 32–34, 36, 37, 54, 59, 60, 62–67, 74] |
| 9 (35 %) | 28 (82 %) | 2 (20 %) | 19 (66 %) | |
| Printed intervention materials | [30–34, 40–46, 48–50, 53, 54, 56] | [24, 26, 28–30, 32, 33, 39, 53, 73, 75, 77–79, 81, 95] | [28–34, 37, 38] | [22, 23, 27, 28, 32, 33, 64, 67, 68, 95] |
| 18 (69 %) | 15 (44 %) | 9 (90 %) | 10 (34 %) | |
| Electronic intervention materials | [35, 36, 39, 44, 47, 51, 52, 55, 60] | [34, 36, 38, 55, 56, 60, 70–72, 74, 80, 82] | [35, 36] | [24, 25, 34–38, 54, 56, 60–63, 66, 69, 96–98] |
| 9 (35 %) | 12 (35 %) | 2 (20 %) | 18 (62 %) | |
N number of studies
aReference numbers of studies < 2004 are derived from the original review [3]. Reference numbers of studies after > refer to references used in this review
bIn some studies, a no-intervention and generic health education control groups were both included