Table 1.
Demographic and other pretreatment characteristics (intention-to-treat set) by the weekly mean number of anthropometric measurements (n=405).
| Demographic and other pretreatment characteristics | Intervention group | Control group (C) | Between-group P value | |||||
| ≥3 times a week (A) | <3 times a week (B) | A-B | A-C | B-C | ||||
| Age (years) | ||||||||
| Total, n (%) | 116 (28.6) | 80 (20.0) | 209 (51.6) | |||||
| Mean (SDa) | 50.45 (12.24) | 42.11 (12.33) | 50.36 (14.27) | <.001b | .96b | <.001b | ||
| Median | 52.50 | 41.50 | 52.00 | |||||
| Range | 23.00-71.00 | 20.00-72.00 | 21.00-82.00 | |||||
| Range, n (%) | ||||||||
| 20-29 | 5 (4.3) | 14 (17.5) | 18 (8.6) | <.001c | .55c | .001c | ||
| 30-39 | 21 (18.1) | 23 (28.8) | 40 (19.1) | |||||
| 40-49 | 21 (18.1) | 20 (25.0) | 33 (15.8) | |||||
| 50-59 | 40 (34.5) | 15 (18.8) | 61 (29.2) | |||||
| ≥60 | 29 (25.0) | 8 (10.0) | 57 (27.3) | |||||
| Sex, n (%) | ||||||||
| Total | 116 (28.6) | 80 (20.0) | 209 (51.6) | |||||
| Male | 57 (49.1) | 44 (55.0) | 101 (48.3) | .42c | .89c | .31c | ||
| Female | 59 (50.9) | 36 (45.0) | 108 (51.7) | |||||
| Body mass index (kg/m2) | ||||||||
| Total, n (%) | 116 (28.6) | 80 (20.0) | 209 (51.6) | |||||
| Mean (SD) | 28.77 (3.09) | 29.72 (3.11) | 29.40 (3.39) | .03b | .1b | .45b | ||
| Median | 28.00 | 29.20 | 28.90 | |||||
| Range | 24.90-41.00 | 25.00-41.40 | 24.90-41.80 | |||||
| Body weight (kg) | ||||||||
| Total, n (%) | 116 (28.6) | 80 (20.0) | 209 (51.6) | |||||
| Mean (SD) | 77.48 (12.30) | 83.86 (14.51) | 79.74 (15.28) | .001b | .15b | .04b | ||
| Median | 76.60 | 83.20 | 76.90 | |||||
| Range | 55.20-128.50 | 58.60-135.40 | 54.00-141.10 | |||||
| Height (cm) | ||||||||
| Total, n (%) | 116 (28.6) | 80 (20.0) | 209 (51.6) | |||||
| Mean (SD) | 163.82 (8.73) | 167.49 (9.29) | 164.12 (10.61) | .005b | .78b | .01b | ||
| Median | 165.00 | 169.20 | 163.00 | |||||
| Range | 146.00-182.00 | 144.50-188.90 | 142.80-189.00 | |||||
| Smoking status, n (%) | ||||||||
| Total | 115 (28.4) | 80 (20.0) | 203 (51.6) | |||||
| Nonsmoker | 72 (62.6) | 47 (58.8) | 129 (63.6) | .02c | .02c | .65c | ||
| Former smoker | 34 (29.6) | 16 (20.0) | 40 (19.7) | |||||
| Smoker | 9 (7.8) | 17 (21.3) | 34 (16.8) | |||||
| Drinking status, n (%) | ||||||||
| Total | 115 (28.4) | 80 (20.0) | 206 (51.6) | |||||
| Nondrinker | 51 (44.4) | 20 (25.0) | 84 (40.8) | .01c | .68c | .03c | ||
| Former drinker | 10 (8.7) | 5 (6.3) | 15 (7.3) | |||||
| Drinker | 54 (47.0) | 55 (68.8) | 107 (51.9) | |||||
| Completed education level, n (%) | ||||||||
| Total | 116 (28.6) | 80 (20.0) | 209 (51.6) | |||||
| Elementary school | 4 (3.5) | 0 | 21 (10.2) | .11d | .15c | .001d | ||
| Middle school | 6 (5.2) | 3 (3.85) | 15 (7.2) | |||||
| High school | 39 (33.6) | 19 (23.8) | 65 (31.1) | |||||
| University | 67 (57.8) | 58 (72.5) | 108 (51.7) | |||||
aSD: standard deviation
b2-sample t test.
cPearson chi-square test.
dFisher exact test.