Table 2

Baseline and follow-up anthropometric outcomes, by treatment group

Control group

Phone group

Internet group


Baseline

Follow-up

Baseline

Follow-up

Change vs. control (95% CI)

Baseline

Follow-up

Change vs. control (95% CI)


Imputed datasetsa

n = 457

n = 459

n = 458


Body weight (SD), kg

92.9 (13.6)

91.7 (13.8)

93.4 (14.1)

90.7 (13.7)

-1.5*** (-2.2; -0.8)

92.8 (14.3)

91.0 (14.2)

-0.6* (-1.3; -0.01)


Completers

n = 321

n = 332

n = 329


Body weight (SD), kg

92.0 (13.2)

91.0 (13.4)

93.5 (14.3)

90.8 (14.0)

-1.6*** (-2.2; -1.0)

91.9 (14.2)

89.8 (14.1)

-1.1*** (-1.7; -0.5)


≥5% weight loss, No. (%)

-

34 (10.6)

-

91 (27.4)

-

-

71 (21.6)

-


≥3% weight gain, No. (%)

-

26 (8.1)

-

20 (6.0)

-

-

18 (5.5)

-


n = 231

n = 236

n = 235


Waist circumference (SD), cm

101.5 (9.8)

99.5 (10.0)

102.6 (10.0)

98.6 (10.3)

-1.9*** (-2.7; -1.0)

101.5 (10.3)

98.2 (10.2)

-1.2** (-2.1; -0.4)


aAll participants except those that became pregnant during the course of the study.* p < 0.05, ** p < 0.01, *** p < 0.001

van Wier et al. BMC Public Health 2009 9:6   doi:10.1186/1471-2458-9-6

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