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. 2016 May 10;4(2):e42. doi: 10.2196/mhealth.5280

Table 2.

Mean changes within the ‘Get Healthy, Stay Healthy’ (GHSH) intervention group (I; n=104) and the control group (C; n=114)



MDI Group Mean Change
(6 months – baseline)a
Within−group
interpretation




Mean (95% CI) P
Anthropometry

Weight (kg) 1 kg I 0.89 (−1.53, −0.25) b .007 Improved



C 0.30 (−0.35, 0.95) .357 Maintained

Waist circumferencec(cm) 1 cm I 1.34 (−2.31, −0.36) .008 Improved



C −0.32 (−1.47, 0.82) .578 Inconclusive
Physical activity (PA)

Vigorous PA (sessions/week) 0.5 session I 0.20 (−0.10, 0.50) .183 Maintained



C −0.40 (−0.86, 0.05) .084 Inconclusive

Moderate PA (sessions/week) 0.5 session I 0.19 (−0.16, 0.54) .277 Inconclusive



C 0.68 (−1.11, −0.26) .002 Worsened

Walking PA (sessions/week) 0.5 session I 0.55 (−0.99, −0.11) .015 Worsened



C 0.31 (−0.40, 1.01) .392 Inconclusive

Accelerometer PAd(minutes/week) 30 minutes I 7.41 (−5.61, 20.44) .265 Maintained



C 16.10 (−28.60, −3.61) .012 Worsened
Dietary behaviors

Vegetables (servings/day) 0.5 serves I −0.17 (−0.46, 0.12) .237 Maintained



C 0.41 (−0.71, −0.12) .006 Worsened

Fruit (servings/day) 0.5 serves I −0.06 (−0.22, 0.10) .482 Maintained



C 0.22 (−0.39,−0.05) .011 Worsened

Sweetened drinks (cups/ day) 0.25 cups I −0.00 (−0.08, 0.08) .982 Maintained



C −0.04 (−0.19, 0.11) .602 Maintained

Takeaway (meals/week) 0.25 meal I −0.13 (−0.28, 0.02) .379 Inconclusive



C −0.06 (−0.19, 0.07) .079 Maintained

FFBQ Total Index Score (1–5) 0.2 units I 0.07 (0.02, 0.12) .011 Improved



C 0.01 (−0.05, 0.07) .781 Maintained

FFBQ Fat Index Score (1–5) 0.2 units I 0.06 (−0.01, 0.13) .082 Maintained



C 0.03 (−0.04, 0.11) .368 Maintained

FFBQ Fiber IndexScore (1–5) 0.2 units I 0.08 (0.01, 0.16) .028 Improved



C −0.03 (−0.12, 0.06) .493 Maintained

aMean changes estimated by paired t-test within completers, or by marginal means from GEE models for daily accelerometer MVPA (which was back-transformed from the log scale and multiplied by 7 yield minutes/week).

bItalic values indicate statistical significance at P˂.05.

cn=103 GHSH group; n=112 control group (item missing data for waist circumference).

dn=99 GHSH group; n=108 control group; some participants did not wear the accelerometer.