Table 2. Univariate and multivariate logistical regression analyses of correlates of breast cancer.
| Variable | Univariate analyses | Multivariate analyses | ||||
| OR (95% CI) | P value | OR (95% CI) | P value | |||
| Abbreviation: CES-D score=Center for epidemiological studies depression scale; OR=ddds ratio; CI=confidence interval; CNY=Chinese Yuan. | ||||||
| Age | 1.021 (1.015, 1.028) | <0.001 | 1.021 (1.013, 1.030) | <0.001 | ||
| CES-D score | 1.102 (1.002, 1.023) | 0.020 | 1.005 (0.994, 1.017) | 0.359 | ||
| Sleep satisfaction | 1.263 (1.167, 1.367) | <0.001 | 1.174 (1.071, 1.285) | 0.001 | ||
| Average monthly income (CNY) | 0.874 (0.800, 0.954) | 0.003 | 0.966 (0.875, 1.067) | 0.498 | ||
| Social status | 1.154 (1.108, 1.308) | 0.025 | 0.988 (0.863, 1.132) | 0.865 | ||
| Education | ||||||
| Primary school and below | Reference | 1 | Reference | 1 | ||
| Junior/senior high school/technical school | 0.912 (0.783, 1.062) | 0.238 | 1.156 (0.966, 1.384) | 0.113 | ||
| Junior college and above | 0.461 (0.265, 0.801) | 0.006 | 0.805 (0.450, 1.438) | 0.463 | ||
| Sleep duration | ||||||
| 7–9 h | Reference | 1 | Reference | 1 | ||
| <7 h | 1.529 (1.281, 1.825) | <0.001 | 1.265 (1.045, 1.531) | 0.016 | ||
| ≥9 h | 1.148 (0.909, 1.449) | 0.248 | 1.164 (0.920, 1.472) | 0.206 | ||