Table 2.
Odds ratios and 95% confidence intervals of insomnia according to anemia status (yes/no).
| Anemia | |||
| Variables | No | Yes | P |
| Model 1∗ | Ref | 1.52 (1.19–1.94) | <0.001 |
| Model 2† | Ref | 1.32 (1.03–1.70) | 0.040 |
| Excluding participants with CRP >1 mg/L∗ | Ref | 1.68 (1.22–2.32) | 0.002 |
| Excluding participants with eGFR <30 mL/min per 1.73 m2 | Ref | 1.30 (1.01–1.67) | 0.045 |
Adjusted for age and sex.
Adjusted for age, sex, education level (primary, middle, college), income level (<600, 600–1000, >1000 RMB/month), occupation (white collar, blue collar, coalminer), physical activity (never, <4, 4+ times/week), smoking status (never, past smoker, current smoker), alcohol status (never, past drinker, current drinker), myocardial infarction history (no, yes), stroke history (no, yes), cancer history (no, yes), hypertension (no, prehypertension, hypertension), diabetes (no, prediabetes, diabetes), body mass index (<24, 24–27.9, ≥28 kg/m2), triglyceride (<0.82, 0.82–1.21, 1.22–1.86, ≥1.87 mmol/L), low density lipoprotein (<1.76, 1.76–2.11, 2.12–2.64, ≥2.65 mmol/L), and high-density lipoprotein (<1.31, 1.31–1.53, 1.54–1.78, ≥1.79 mmol/L). CRP: C-reactive protein; eGFR: Estimated glomerular filtration rate.