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Table 2 Mean scores of SF-36 domains with different Body Mass Index categories

From: The health-related quality of life among pre-diabetics and its association with body mass index and physical activity in a semi-urban community in Malaysia- a cross sectional study

SF-36 domains BMI categories   
Total, n=268 Normal, n=19 Overweight, n=58 Obese, n=191 F-stats p-value
  Mean (SD) Mean (SD) Mean (SD) Mean (SD)   
PCS 81.03 (13.20) 88.01 (9.80) 86.78 (11.11) 78.59 (13.33) 12.23 <0.001*a,b
 PF 81.92 (16.59) 84.47 (19.06) 87.41 (13.83) 79.99 (16.78) 4.82 0.009*b
 RP 86.13 (19.20) 83.22 (23.39) 88.64 (20.52) 85.66 (18.36) 0.77 0.465
 BP 84.35 (17.09) 92.16 (13.19) 94.19 (11.35) 80.59 (17.47) 18.31 <0.001*a,b
 GH 70.49 (17.34) 74.68 (13.45) 76.88 (15.42) 68.14 (17.73) 6.51 0.002*b
MCS 83.85 (11.54) 85.52 (13.07) 85.55 (9.60) 83.16 (11.91) 1.17 0.313
 VT 74.39 (13.36) 75.98 (12.88) 77.69 (12.83) 73.23 (13.45) 2.65 0.072
 SF 91.70 (15.43) 92.76 (15.20) 93.53 (13.08) 91.04 (16.12) 0.62 0.537
 RE 87.29 (18.58) 89.91 (19.94) 87.21 (18.15) 87.05 (18.65) 0.20 0.816
 MH 82.01 (12.12) 83.42 (12.25) 83.79 (10.10) 81.34 (12.65) 1.05 0.351
  1. Notes: One-way ANOVA or its equivalent Kruskal-Wallis test was used to compare the mean scores of each domains, *significant difference at p<0.05. Post-hoc analysis using Tamhane’s test. a(significant difference between normal vs obese), b (significant difference between overweight vs obese).
  2. BMI categories is based on WHO revised cut-offs for Asian: normal (18.5-22.9) kg/m2, overweight (23.0-27.4) kg/m2 and obese (≥ 27.5 ) kg/m2. PF: Physical Functioning, RP: Role limitations due to Physical health, BP: Bodily Pain, GH: General Health, VT: Vitality, SF: Social Functioning, RE: Role Emotions due to mental health, MH: Mental Health, PCS: Physical Component Summary and MCS: Mental Component Summary.
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