Web-Based Interventions Alone or Supplemented with Peer-Led Support or Professional Email Counseling for Weight Loss and Weight Maintenance in Women from Rural Communities: Results of a Clinical Trial
Table 6
Estimated meeting criteria in each intervention group, tests of pairwise group , and odds ratios at 6 months, 18 months, and 30 months.
Outcome
Estimated proportions
WO versus WD
WO versus WE
WD versus WE
WO
WD
WE
OR (95% CI)
OR (95% CI)
OR (95% CI)
Weight loss ≥ 5% of baseline
6 months
.42
.38
.51
0.290
1.2 (0.7 to 2.2)
0.117
0.7 (0.4 to 1.3)
0.078
1.7 (0.9 to 3.0)
18 months
.31
.31
.42
0.476
1.0 (0.5 to 2.1)
0.066
0.6 (0.3 to 1.2)
0.158
1.7 (0.8 to 3.4)
30 months
.32
.31
.40
0.442
1.1 (0.5 to 2.2)
0.135
0.7 (0.4 to 1.3)
0.239
1.5 (0.8 to 3.0)
Weight loss ≥ 10% of baseline
6 months
.24
.19
.29
0.297
1.3 (0.6 to 2.7)
0.206
0.8 (0.4 to 1.5)
0.120
1.7 (0.9 to 3.4)
18 months
.17
.17
.18
0.433
1.1 (0.5 to 2.5)
0.311
0.8 (0.4 to 1.8)
0.528
1.3 (0.6 to 3.0)
30 months
.29
.20
.20
0.326
0.8 (0.3 to 2.0)
0.185
0.7 (0.3 to 1.5)
0.700
1.2 (0.5 to 2.7)
20–35% calories from fat
6 months
.53
.38
.56
0.023
1.8 (1.0 to 3.4)
0.341
0.9 (0.5 to 1.6)
0.017
2.1 (1.1 to 3.8)
18 months
.48
.32
.45
0.019
1.9 (1.0 to 3.6)
0.346
1.1 (0.6 to 2.2)
0.109
1.7 (0.9 to 3.3)
30 months
.38
.29
.46
0.096
1.5 (0.8 to 2.9)
0.151
0.7 (0.4 to 1.3)
0.021
2.1 (1.1 to 4.0)
≥150 minutes weekly moderate or greater intensity activity (Actigraph)
6 months
.78
.81
.75
0.279
0.8 (0.4 to 1.7)
0.361
1.1 (0.6 to 2.3)
0.352
0.7 (0.3 to 1.5)
18 months
.79
.71
.71
0.138
1.5 (0.7 to 3.1)
0.131
1.5 (0.7 to 3.3)
0.940
1.0 (0.5 to 1.9)
30 months
.74
.68
.64
0.236
1.3 (0.6 to 2.7)
0.093
1.6 (0.8 to 3.1)
0.591
0.8 (0.4 to 1.7)
≥150 minutes weekly moderate or greater intensity activity (BRFSS)
6 months
.44
.36
.42
0.159
1.4 (0.7 to 2.7)
0.403
1.1 (0.6 to 2.0)
0.397
1.3 (0.7 to 2.4)
18 months
.34
.32
.36
0.443
1.1 (0.5 to 2.2)
0.361
0.9 (0.5 to 1.7)
0.623
1.2 (0.6 to 2.4)
30 months
.31
.32
.27
0.444
1.0 (0.5 to 1.9)
0.286
1.2 (0.6 to 2.4)
0.489
0.8 (0.4 to 1.6)
Notes. WO is web-based only group, WD is web-based with peer-led discussion group, and WE is web-based with professional email counseling. estimated from the 20 imputed datasets. estimating equations (GEEs) were used with multiply imputed dataset to fit a model to all three times, incorporating tests of pairwise comparisons of groups on the proportion meeting criteria at end of each phase. versus WD and WO versus WE are one-tailed tests to match hypotheses, and WD versus WE is two-tailed, each tested at .
