Table 3.
Percentage change (95% CI)a |
P | |
---|---|---|
All HIV-uninfected participants | ||
Age group (55-82 vs 40-54 years) | -4.9 (-15.2 to 6.7) | 0.396 |
Junior middle school or above | -14.0 (-22.8 to -4.3) | 0.006 |
Depressive symptoms as a continuous variable | -2.5 (-3.8 to -1.2) | <.001 |
Insomnia symptoms | 8.4 (-13.9 to 36.5) | 0.492 |
Insomnia symptoms × age group interaction | -17.9 (-41.3 to 14.9) | 0.250 |
HIV-uninfected participants aged 40-54 years | ||
Age as a continuous variable | -1.6 (3.3 to 0.1) | 0.064 |
Depressive symptoms as a continuous variable | -2.4 (-4.0 to -0.7) | 0.006 |
Insomnia symptoms | 7.3 (-14.8 to 35.0) | 0.550 |
HIV-uninfected participants aged 55-82 years | ||
Model 1b | ||
Age as a continuous variable | -0.9 (-2.2 to 0.4) | 0.195 |
Junior middle school or above | -29.9 (-41.0 to -16.7) | <.001 |
WHR above the cutoff | -20.7 (-33.6 to -5.3) | 0.012 |
Insomnia symptoms | -9.8 (-30.0 to 16.2) | 0.428 |
Model 2b | ||
Age as a continuous variable | -0.7 (-2.0 to 0.7) | 0.314 |
Junior middle school or above | -27.9 (-39.4 to -14.3) | <.001 |
WHR above the cutoff | -22.1 (-34.5 to -7.0) | 0.006 |
Depressive symptoms as a continuous variable | -2.0 (-4.2 to 0.3) | 0.090 |
Other variables considered in model selection included age, gender, education, smoking history, WHR above the cutoff, insomnia symptoms, and depressive symptoms, which were selected by univariable linear regression models with P <0.15 (See Table S3). Backward selection was used with retention at P <0.10. Age and insomnia symptoms were enforced and included in the final model where appropriate. Only variables included in final model were presented.
When both insomnia and depressive symptoms were simultaneously included in the model, they remained insignificant (P=0.730, and P=0.116, respectively). CI, confidence interval; WHR, waist to hip circumference ratio.