Variables | Model B | Model C | Model D |
---|---|---|---|
 | OR (95 % CI) | OR (95 % CI) | OR (95 % CI) |
Demographic characteristics | |||
 Age | |||
  18–44 | 0.71 (0.55–0.91) |  | 0.70 (0.54–0.91) |
  45–59 | 0.82 (0.67–1.02) |  | 0.82 (0.67–1.02) |
  60+ | Reference |  | Reference |
 Sex | |||
  Female | 1.19 (1.02–1.39) |  | 1.18 (1.00–1.38) |
  Male | Reference |  | Reference |
Socioeconomic status | |||
 Marital status |  |  |  |
  Married | 1.24 (0.83–1.85) |  | 1.24 (0.83–1.86) |
  Other | 1.54 (0.97–2.45) |  | 1.53 (0.96–2.45) |
  Never married | Reference |  | Reference |
 Education attainment | |||
  No formal education | 0.52 (0.36–0.76) |  | 0.54 (0.37–0.78) |
  Primary school | 0.57 (0.38–0.80) |  | 0.59 (0.41–0.84) |
  Middle school | 0.70 (0.53–0.94) |  | 0.72 (0.54–0.97) |
  High school | 0.70 (0.53–0.93) |  | 0.71 (0.53–0.93) |
  University | Reference |  | Reference |
 Annual household income per capita | |||
   ≤ 20 percentile | 0.67 (0.49–0.90) |  | 0.68 (0.50–0.93) |
   ≤ 40 percentile | 0.59 (0.43–0.79) |  | 0.60 (0.44–0.81) |
   ≤ 60 percentile | 0.74 (0.57–0.97) |  | 0.75 (0.57–0.98) |
   ≤ 80 percentile | 0.89 (0.70–1.12) |  | 0.88 (0.70–1.12) |
   > 80 percentile | Reference |  | Reference |
Health condition | |||
 Illness over past 4 weeks | |||
  Yes | 2.36 (1.97–2.83) |  | 2.29 (1.91–2.75) |
  No | Reference |  | Reference |
 Chronic condition | |||
  Yes | 1.95 (1.62–2.35) |  | 1.93 (1.60–2.33) |
  No | Reference |  | Reference |
Medical insurance | |||
 CMI | |||
  Yes | 1.21 (0.80–1.82) |  | 1.15 (0.76–1.73) |
  No | Reference |  | Reference |
 BSMI | |||
  NCRMS | 0.68 (0.51–0.89) |  | 0.77 (0.57–1.05) |
  URBMI | 0.81 (0.64–1.04) |  | 0.81 (0.63–1.03) |
  UEBMI | Reference |  | Reference |
Residency | |||
 Region of residence | |||
  Northeastern |  | 0.31 (0.19–0.51) | 0.37 (0.23–0.61) |
  Western |  | 0.54 (0.37–0.80) | 0.74 (0.50–1.10) |
  Central |  | 0.45 (0.30–0.66) | 0.60 (0.41–0.90) |
  Eastern |  | Reference | Reference |
 Type of community | |||
  Urban neighborhood |  | 2.26 (1.52–3.35) | 1.261 (0.80–1.99) |
  Suburban village |  | 1.68 (1.13–2.50) | 1.21 (0.80–1.84) |
  County town |  | 1.45 (0.91–2.30) | 1.14 (0.70–1.85) |
  Rural village |  | Reference | Reference |
Random parameters | Coefficient (SE) | Coefficient (SE) | Coefficient (SE) |
 Level 3: community | 0.97 (0.000) | 1.02 (0.000) | 0.96 (0.000) |
 Level 2: household | 0.94 (0.000) | 0.97 (0.000) | 0.95 (0.000) |