Table 2.
Logistic Odds Ratio of ADL Disability by BMI and WC, respectively, among the Males oldest old, Chinese Longitudinal Healthy Longevity Survey, China, 2011 (n=2303) a, b, c,d
| Variables | Un-adjusted | Model 1 | Model 2 | Model 3 |
|---|---|---|---|---|
| BMI (<18.5 kg/m2, n=649) | ||||
| Lowest | 1.31 (0.88-1.96) | 1.23 (0.80-1.89) | 1.02 (0.61-1.70) | 0.93 (0.56-1.54) |
| lower | 0.79 (0.51-1.23) | 0.63 (0.40-1.01) | 0.70 (0.40-1.22) | 0.64 (0.37-1.09) |
| low | 1.00 reference | 1.00 reference | 1.00 reference | 1.00 reference |
| BMI (>=18.5 kg/m2, n=1654) | ||||
| high | 1.00 reference | 1.00 reference | 1.00 reference | 1.00 reference |
| higher | 1.17 (0.89-1.54) | 1.23 (0.93-1.64) | 1.34 (0.95-1.88) | 1.39 (0.98-1.97) |
| Highest | 1.37 (1.05-1.79) | 1.52 (1.15-2.01) | 1.78 (1.27-2.48) | 1.78 (1.26-2.52) |
| WC (<75 cm, n=579) | ||||
| Lowest | 1.57 (1.01-2.46) | 1.61 (1.01-2.56) | 1.28 (0.73-2.25) | 1.16 (0.64-2.09) |
| lower | 1.10 (0.71-1.72) | 1.05 (0.67-1.66) | 0.89 (0.51-1.54) | 0.91 (0.50-1.65) |
| low | 1.00 reference | 1.00 reference | 1.00 reference | 1.00 reference |
| WC(>=75cm, n=1724) | ||||
| high | 1.00 reference | 1.00 reference | 1.00 reference | 1.00 reference |
| higher | 1.06 (0.80-1.39) | 1.04 (0.78-1.38) | 1.14 (0.80-1.60) | 1.22 (0.85-1.75) |
| Highest | 1.42 (1.10-1.83) | 1.50 (1.15-1.96) | 1.94 (1.40-2.67) | 2.01 (1.44-2.82) |
Abbreviations: ADL, activities of daily living; BMI, body mass index; CI, confidence interval; OR, odds ratio; WC, waist circumference.
Data was shown as OR (95% CI), and the group ‘low ’ and ‘high’ were used as reference group.
Ranges for body mass index (BMI): Lowest 13.12 to <16.36; lower 16.36 to <17.58; low 17.58 to <18.5; high 18.5 to <20.55; higher 20.55 to <22.86; highest 22.86 to <=43.56.
Range for waist circumference (WC): lowest 51 to <68; lower 68 to <72; low 72 to <75; high 75 to <81, higher 81 to <88, highest 88 to <=160;
Model 1: adjustment for age, education, nationality, marital status; Model 2: additionally adjusted for living arrangement, smoking, drinking, physical activities, leisure activities and resilience; Model 3: additionally adjusted for self-rated health status, cognitive impairment, SBP, DBP, the prevalence of heart diseases, stroke, respiratory disease, cancer and bone joint disease.
Similar results were obtained when BMI and WC were both included in models.