Skip to main content

Table 2 Mean scores and between-group differences for KAP supporting a healthy lifestyle (n = 76)

From: Effectiveness of a school-based intervention on knowledge, attitude and practice on healthy lifestyle and body composition in Malaysian adolescents

VariableaPrePost IPost II
Mean (SD)Adjusted mean
(95% CI)b
Adjusted mean difference
(95% CI)c
Fp-valueAdjusted effect sizedAdjusted mean
(95% CI)b
Adjusted mean difference
(95% CI)c
Fp-valueAdjusted effect sized
Knowledge
 IG15.03 (3.22)18.05 (16.36, 19.75)3.34 (0.99, 5.69)*8.030.0060.10 (M)18.02 (16.61, 19.44)2.82 (0.86, 4.78)*8.260.0050.11 (M)
 CG12.12 (3.62)14.72 (13.27, 16.16)    15.20 (14.00, 16.40)    
Attitude
 IG108.97 (10.79)107.43 (104.08, 110.77)−0.30 (−4.86, 4.25)0.020.8950.00 (N)107.78 (103.80, 111.76)2.66 (−2.76, 8.07)0.960.3310.01 (S)
 CG104.10 (11.37)107.73 (104.82, 110.64)    105.12 (101.66, 108.58)    
Practice
 IG112.00 (11.73)106.92 (103.40, 110.44)−3.95 (−8.73, 0.83)2.720.1030.04 (S)108.13 (103.67, 112.59)−3.23 (−9.28, 2.82)1.140.2900.02 (S)
 CG108.26 (11.72)110.87 (107.82, 113.92)    111.37 (107.50, 115.23)    
  1. *Significant difference (p < 0.05)
  2. aScore ranges: knowledge (0–32), attitude (24–144), practice (35–175). Higher scores in the respective scales indicate better knowledge of a healthy lifestyle, more positive attitudes towards a healthy lifestyle and a healthier lifestyle being practised
  3. bAdjusted mean using analysis of covariance after controlling for age, sex and pre-intervention variables
  4. cBonferroni adjustment for 95% confidence interval for differences
  5. dEffect sizes: 0.01 = small; 0.06 = moderate; 0.14 = large (Cohen, [34]); N = negligible, S = small; M = moderate