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