Table 2.
Univariate factor analysis of short sleep duration and long sleep duration
| Factors | Short sleep duration | Long sleep duration | ||||||
|---|---|---|---|---|---|---|---|---|
| χ 2 | OR | (95%CI) | χ 2 | OR | (95%CI) | |||
| Sex | 2. | 18 | 5. | 93* | ||||
| Male | 1.05 | (0.98, 1.13) | 0.87 | (0.78, 0.97) | ||||
| Female | 1 | 1 | ||||||
| Age | 566. | 10* | 17. | 57* | ||||
| Young | 1 | 1 | ||||||
| Middle age | 2.27 | (2.10, 2.44) | 0.86 | (0.77, 0.97) | ||||
| Elderly | 2.58 | (2.33, 2.85) | 1.17 | (1.01, 1.34) | ||||
| Ethnicity | 2. | 44 | 6. | 92* | ||||
| Han | 0.90 | (0.79, 1.03) | 1.33 | (1.08, 1.64) | ||||
| Others | 1 | 1 | ||||||
| Place of residence | 9. | 59* | 66. | 07* | ||||
| Urbanite | 1.12 | (1.04, 1.20) | 0.63 | (0.56, 0.70) | ||||
| Countryside | 1 | 1 | ||||||
| Marital status | 187. | 08* | 2. | 72 | ||||
| Marriage /Cohabitation | 1 | 1 | ||||||
| Unmarried | 0.59 | (0.51, 0.68) | 1.12 | (0.93, 1.34) | ||||
| Divorce/Divorcee/Separated spouse | 1.75 | (1.39, 2.19) | 0.88 | (0.56, 1.37) | ||||
| Widow/ Widower | 2.18 | (1.87, 2.50) | 1.14 | (0.89, 1.45) | ||||
| Occupation | 87. | 80* | 52. | 45* | ||||
| Mental worker | 1 | 1 | ||||||
| Manual worker | 1.26 | (1.15, 1.38) | 1.70 | (1.46, 1.98) | ||||
| Others | 1.67 | (1.50, 1.85) | 1.83 | (1.52, 2.21) | ||||
| Educational level | 180. | 35* | 125. | 52* | ||||
| Primary school or below | 1 | 1 | ||||||
| Junior middle school | 0.68 | (0.62, 0.75) | 0.74 | (0.64, 0.85) | ||||
| Senior middle school | 0.73 | (0.67, 0.81) | 0.52 | (0.45, 0.61) | ||||
| Undergraduate or above | 0.48 | (0.43, 0.54) | 0.43 | (0.36, 0.51) | ||||
| Average monthly income (¥) | 51. | 70* | 53. | 30* | ||||
| < 500 | 1 | 1 | ||||||
| 500- | 0.77 | (0.70, 0.84) | 0.61 | (0.53, 0.70) | ||||
| 3000- | 0.65 | (0.57, 0.74) | 0.60 | (0.49, 0.75) | ||||
| Cigarette smoking | 63. | 29* | 0. | 89 | ||||
| Never | 1 | 1 | ||||||
| Once | 1.44 | (1.28, 1.63) | 1.07 | (0.89, 1.30) | ||||
| Currently | 1.30 | (1.20, 1.40) | 0.97 | (0.86, 1.10) | ||||
| Alcohol drinking | 7. | 81* | 13. | 04* | ||||
| No | 1 | 1 | ||||||
| Yes | 1.11 | (1.03, 1.20) | 0.80 | (0.71, 0.90) | ||||
| Dietary | 30. | 58* | 3. | 90* | ||||
| Irregular | 1 | 1 | ||||||
| Regular | 0.78 | (0.71, 0.85) | 0.87 | (0.75, 0.99) | ||||
| Physical exercise | 95. | 45* | 40. | 13* | ||||
| Never | 1 | 1 | ||||||
| Sometimes | 0.70 | (0.64, 0.77) | 0.70 | (0.61, 0.81) | ||||
| Often | 1.12 | (1.03, 1.21) | 0.70 | (0.61, 0.79) | ||||
| BMI | 68. | 11* | 11. | 94* | ||||
| Normal | 1 | 1 | ||||||
| Underweight | 0.66 | (0.54, 0.81) | 1.20 | (1.08, 1.33) | ||||
| Overweight | 1.21 | (1.11, 1.30) | 0.85 | (0.75, 0.96) | ||||
| Obesity | 1.34 | (1.21, 1.49) | 1.02 | (1.01, 1.03) | ||||
| Hypertension | 147. | 91* | 1. | 45 | ||||
| No | 1 | 1 | ||||||
| Yes | 1.60 | (1.48, 1.72) | 1.08 | (0.96, 1.21) | ||||
| Diabetes | 58. | 15* | 0. | 001 | ||||
| No | 1 | 1 | ||||||
| Yes | 1.41 | (1.29, 1.53) | 1.00 | (0.86, 1.16) | ||||
| Hyperlipidemia | 1. | 01 | 3. | 33 | ||||
| No | 1 | 1 | ||||||
| Yes | 1.04 | (0.96, 1.23) | 1.13 | (0.99, 1.29) | ||||
| CHD or MIa | 69. | 96* | 7. | 63* | ||||
| No | 1 | 1 | ||||||
| Yes | 1.68 | (1.49, 1.90) | 1.30 | (1.08,1.57) | ||||
*:P<0.05
a:CHD Coronary Heart Disease, MI Myocardial Infarction
1:the reference cell