Table 4. Univariate and multivariate Tobit regression analysis of factors associated with the summary score on the Chinese version of the core Healthy Days measures (HRQOL-5) in Weifang, China (2018‐2019).
| Variables | Summary score, mean (SD) | Univariate | Multivariate | |||
| β (95% CI) | P value | β (95% CI) | P value | |||
| Age | 95.88 (9.41) | –0.17 (–0.18 to –0.16) | <.001 | –0.06 (–0.08 to –0.05) | <.001 | |
| Sex | ||||||
| Male | 96.16 (9.23) | Reference | —a | Reference | — | |
| Female | 95.57 (9.78) | –0.88 (–1.16 to –0.60) | <.001 | 0.20 (–0.13 to 0.53) | .24 | |
| BMI | ||||||
| Normal weight | 95.94 (9.58) | Reference | — | Reference | — | |
| Underweight | 93.99 (12.82) | –2.43 (–3.05 to –1.81) | <.001 | –0.52 (–1.12 to 0.08) | .09 | |
| Overweight | 96.06 (8.78) | 0.03 (–0.28 to 0.34) | .85 | 0.30 (0.00 to 0.59) | .05 | |
| Obesity | 95.93 (8.80) | –0.11 (–0.54 to 0.32) | .61 | 0.36 (–0.05 to 0.77) | .09 | |
| Education | ||||||
| Illiterate | 93.42 (13.02) | Reference | — | Reference | — | |
| Primary school | 94.80 (11.01) | 1.66 (1.24 to 2.09) | <.001 | 0.72 (0.29 to 1.14) | .001 | |
| Junior middle school | 96.73 (7.54) | 4.47 (4.06 to 4.87) | <.001 | 1.46 (1.00 to 1.92) | <.001 | |
| Senior middle school or more | 97.76 (5.11) | 6.51 (6.05 to 6.98) | <.001 | 2.58 (2.03 to 3.12) | <.001 | |
| Marital status | ||||||
| Married | 96.05 (9.02) | Reference | — | Reference | — | |
| Unmarried | 96.63 (10.08) | 2.44 (1.61 to 3.26) | <.001 | –0.24 (–1.06 to 0.59) | .58 | |
| Divorced/widowed | 93.99 (12.14) | –2.95 (–3.42 to –2.49) | <.001 | 0.26 (–0.21 to 0.73) | .28 | |
| Average income (¥)b | ||||||
| <5000 | 93.57 (9.12) | Reference | — | Reference | — | |
| 5000‐9999 | 95.47 (8.26) | –0.11 (–0.56 to 0.35) | .64 | –0.01 (–0.45 to 0.43) | .96 | |
| 10,000‐29,999 | 96.19 (6.45) | 0.91 (0.53 to 1.30) | <.001 | 0.32 (–0.05 to 0.69) | .09 | |
| ≥30,000 | 97.05 (4.57) | 2.41 (2.07 to 2.76) | <.001 | 0.69 (0.35 to 1.03) | <.001 | |
| Residence | ||||||
| Rural | 96.34 (8.66) | Reference | — | Reference | — | |
| Urban | 95.45 (10.03) | –1.39 (–1.67 to –1.11) | <.001 | –0.21 (–0.48 to 0.07) | .14 | |
| Physical activity | ||||||
| No | 94.50 (11.83) | Reference | — | Reference | — | |
| Yes | 96.11 (8.92) | 2.47 (2.08 to 2.86) | <.001 | 0.75 (0.37 to 1.13) | <.001 | |
| Smoking | ||||||
| No | 95.73 (9.74) | Reference | — | Reference | — | |
| Yes | 96.41 (8.08) | 0.90 (0.56 to 1.24) | <.001 | 0.18 (–0.19 to 0.56) | .34 | |
| Drinking | ||||||
| No | 95.66 (9,94) | Reference | — | Reference | — | |
| Yes | 96.56 (7.50) | 1.20 (0.88 to 1.53) | <.001 | 0.46 (0.08 to 0.81) | .02 | |
| Self-reported disease | ||||||
| No | 97.60 (5.12) | Reference | — | Reference | — | |
| Yes | 91.90 (14.48) | –7.66 (–7.95 to –7.38) | <.001 | –6.36 (–6.66 to –6.06) | <.001 | |
| Self-reported injury | ||||||
| No | 96.01 (9.10) | Reference | — | Reference | — | |
| Yes | 90.15 (17.34) | –6.91 (–7.81 to –6.01) | <.001 | –5.00 (–5.85 to –4.15) | <.001 | |
a
Not applicable.
b
A currency exchange rate of ¥1=US $0.14 is applicable.