| PMC full text: | Obesity (Silver Spring). Author manuscript; available in PMC 2012 Jan 30. Published in final edited form as: Obesity (Silver Spring). 2011 Feb; 19(2): 338–344. Published online 2010 Sep 16. doi: 10.1038/oby.2010.208 |
Table 2
Percent changes in weight, waist circumference, and dietary intake by groups at 6 months
| Variable | PR (n = 72) | PDA (n = 68) | PDA+FB (n = 70) | P valuea |
|---|---|---|---|---|
| Weightb | ||||
 median (IQR) | −4.6 (−8.6, −0.5) | −4.8 (−9.3, −0.5) | −6.5 (−10.4, −2.7) | 0.12 |
| mean (SD) | −5.3 (5.9) | −5.5 (7.0) | −7.3 (6.6) | |
| Waist circumferenceb,a | ||||
| median (IQR) | −4.0 (−8.4, 0.0) | −5.0 (−8.5, −1.7) | −6.4 (11.5, −1.8) | 0.03 |
| mean (SD) | −4.6 (6.0) | −5.5 (5.4) | −6.9 (5.8) | |
| Energy intakeb,c | ||||
| median (IQR) | −12.5 (−34.7, 0.0) | −19.9 (−39.2, −1.6) | −23.3 (−40.6, −8.3) | 0.05 |
| mean (SD) | −11.9 (31.9) | −16.7 (31.7) | −24.0 (22.4) | |
| trimmed mean (SD) | −17.4 (22.7) | −20.8 (25.3) | −26.6 (19.1) | |
| % kcal total fatb | ||||
| median (IQR) | 0.0 (−21.3, 8.7) | −9.2 (25.4,−0.1) | −12.6 (−32.8, 0.0) | 0.12 |
| mean (SD) | −5.5 (27.0) | −9.2 (20.7) | −14.0 (25.0) | |
| trimmed mean (SD) | −7.7 (23.9) | −10.2 (19.0) | −14.0 (25.0) | |
| % kcal SFAb,c | ||||
| median (IQR) | 0.0 (−31.5, 17.7) | −11.3 (−31.9, 4.5) | −17.5 (−36.1, 0.0) | 0.08 |
| mean (SD) | −1.9 (36.3) | −7.8 (36.4) | −14.4 (32.0) | |
| trimmed mean (SD) | −6.7 (28.4) | −15.5 (22.3) | −15.9 (29.5) | |
| % kcal MUFAb | ||||
| median (IQR) | −5.4 (−23.4, 15.2) | −8.9 (−26.8, 4.2) | −11.5 (−31.6, 8.2) | 0.37 |
| mean (SD) | −2.9 (33.5) | −8.8 (25.6) | −11.6 (30.5) | |
| trimmed mean (SD) | −8.0 (26.0) | −11.2 (21.9) | −13.0 (28.6) | |
| % kcal PUFAb | ||||
| median (IQR) | −4.3 (−33.1, 11.0) | −3.3 (−29.9, 9.5) | −15.4 (−40.9, 15.4) | 0.42 |
| mean (SD) | −4.6 (41.3) | −2.8 (35.3) | −8.6 (43.4) | |
| trimmed mean (SD) | −9.5 (34.3) | −9.5 (26.9) | −13.8 (35.1) |
PR, paper record; PDA, personal digital assistant; PDA+FB, personal digital assistant with the added customized feedback program; SFA, saturated fatty acids; MUFA, monounsaturated fatty acids; PUFA, polyunsaturated fatty acids; IQR, interquartile range.
Trimmed mean (SD) is calculated by excluding outliers.
aP value calculated from Kruskal-Wallis test for the comparison of three groups.
bP < .05 are for significant changes within treatment groups.
cP < .05 are for significant differences between the PR and the PDA (PDA and PDA+FB).