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Table 3 Mixed regression analysis of outcomes before and after intervention (n = 280)

From: Effects of a physical activity and nutrition program in retirement villages: a cluster randomised controlled trial

Outcomes Groupa
(intervention versus control)
Timea
(post versus baseline)
Group × timea
COE SE p COE SE p COE SE p
Weightb −1.30 1.61 0.423 0.02 0.20 0.914 −0.54 0.27 0.047
Body mass indexb −0.08 0.60 0.893 −0.04 0.08 0.651 −0.03 0.17 0.855
Waist-to-hip ratiob −0.01 0.01 0.468 0.01 0.01 0.143 −0.01 0.01 0.243
Systolic blood pressureb −0.25 2.21 0.910 1.01 1.36 0.457 −0.79 2.41 0.743
Diastolic blood pressureb 0.57 1.28 0.658 0.92 0.52 0.077 −2.16 1.01 0.032
Walking timebc 0.12 0.14 0.379 −0.02 0.17 0.909 0.23 0.20 0.257
Sitting timed 0.02 0.04 0.558 0.02 0.04 0.640 −0.11 0.05 0.027
Moderate activityd 0.96 0.36 0.008 0.44 0.17 0.011 0.07 0.21 0.726
Vigorous activitye 0.34 0.36 0.347 0.47 0.34 0.170 −0.26 0.40 0.513
Strength exercisee −0.26 0.30 0.387 0.12 0.19 0.515 1.14 0.31 <0.001
Frequent fruit intakee 0.24 0.25 0.335 −0.30 0.19 0.118 0.63 0.25 0.012
Frequent vegetable intakee 0.42 0.36 0.241 −0.30 0.23 0.190 0.39 0.45 0.378
Fibre intake scoreb 0.05 0.09 0.588 0.02 0.04 0.545 0.07 0.05 0.189
Fat intake scoreb −0.05 0.05 0.340 0.05 0.03 0.106 0.04 0.04 0.285
Fat avoidance scoreb 0.13 0.12 0.266 0.12 0.05 0.023 −0.06 0.07 0.418
  1. COE coefficient, SE standard error
  2. aadjusted for age (years), height, gender, education level (secondary school or below, trade certificate/diploma, university), relationship status (no partner, with partner), smoking status (never, former/current) and co-morbidity (no, yes)
  3. blinear mixed regression model
  4. clogarithmic transformed
  5. dgamma mixed regression model
  6. elogistic mixed regression model