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Table 3 Means and standard error of the mean for outcome measures by time and group based on CVD risk factor sub-group (intent-to-treat analyses)

From: Effectiveness of a motivational interviewing intervention on weight loss, physical activity and cardiovascular disease risk factors: a randomised controlled trial with a 12-month post-intervention follow-up

CHD risk factor Time Analysisa
  Baseline 6-Months 18-Months Time x Group (F) Effect sizeb
Obese      
Bodyweight     2.45 .022
   Intervention (n= 133) 97.86 (1.16) 96.92 (1.17) 97.71 (1.21)   
   Control (n= 93) 95.56 (1.39) 95.49 (1.40) 96.67 (1.45)   
Obese      
BMI≥30 kg.m-2     5.43* .048
   Intervention (n= 133) 35.37 (0.38) 35.00 (0.39) 35.04 (0.39)   
   Control (n= 93) 34.68 (0.46) 34.75 (0.48) 35.22 (0.48)   
Hypertensive      
SBP>150 mmHg     1.04 .059
   Intervention (n= 31) 150.49 (1.71) 141.82 (2.16) 138.23 (3.08)   
   Control (n= 18) 153.71 (3.71) 152.19 (4.68) 144.74 (6.68)   
Hypertensive      
DBP>90 mmHg     2.10 .123
   Intervention ( n= 46) 96.57 (0.97) 90.72 (1.33) 90.99 (1.30)   
   Control (n= 24) 96.52 (1.58) 94.44 (2.15) 91.62 (2.11)   
Hypercholesterolemia      
(≥5.2 mmol.l-1)     3.01* .036
   Intervention (n= 107) 6.11 (0.07) 5.90 (0.08) 5.87 (0.08)   
   Control (n= 67) 6.00 (0.08) 5.92 (0.11) 6.03 (0.11)   
Insufficiently      
Active      
<600 Met-mins .wk-1     0.15 .002
   Intervention ( n= 78) 186.00 (22.50) 1124.95 (198.13) 2655.67 (372.16)   
   Control (n= 44) 147.85 (30.59) 1053.88 (269.44) 2275.71 (506.09)   
  1. Note. Figures in parentheses are standard errors. aF-ratio representing interaction effect of time by group on dependent variable; bPartial eta-squared (η2p). BMI = Body mass index; SBP = Systolic blood pressure; DBP = Diastolic blood pressure.
  2. * p < .05.