Table 4:
Associations between Years of Exposure to Poverty and Risky Sleep Duration and Difficulty Falling Asleep (N=1693)
| Risky Sleep Duration Relative risk ratio (95% CI) |
Difficulty Falling Asleep Odds ratio (95% CI) |
||
|---|---|---|---|
| Short Sleep Duration |
Long Sleep Duration |
||
| Basic demographics-adjusted model | |||
| No exposure (reference) | |||
| 1 year exposure | 1.392 (0.896. 2.164) |
1.502 (0.882. 2.560) |
1.357 (0.841. 2.189) |
| 2–4 years exposure | 1.049 (0.565. 1.949) |
1.624† (0.977. 3.113) |
1.919 * (1.100 3.349) |
| 5 years or more exposure | 1.449 (0.877. 2.394) |
1.950* (1.120. 3.392) |
1.766 * (1.076. 2.900) |
| Regression-adjusted model | |||
| No exposure (reference) | |||
| 1 year exposure | 1.278 (0.794. 2.057) |
1.696 (0.962. 2.988) |
1.185 (0.725 1.939) |
| 2–4 years exposure | 1.019 (0.533. 1.950) |
1.409 (0.689 2.882) |
1.030 (0.548. 1.937) |
| 5 years or more exposure | 1.058 (0.596. 1.878) |
1.220 (0.633. 2.353) |
1.923* (1.124. 3.291) |
| Stabilized IPT weighted | |||
| No exposure (reference) | |||
| 1 year exposure | 1.256 (0.799. 1.975) |
1.240 (0.711. 2.163) |
1.470 (0.764. 2.828) |
| 2–4 years exposure | 1.279 (0.708. 2.312) |
0.925 (0.449. 1.906) |
1.644 (0.851 3.176) |
| 5 years or more exposure | 1.148 (0.653. 2.019) |
0.937 (0.490. 1.793) |
1.782† (0.950. 3.344) |
| Basic demographics-adjusted model | |||
| No exposure (reference) | |||
| 1 year exposure | 0.872 (0.558 1.363) |
1.224 (0.643. 2.328) |
1.119 (0.706 1.773) |
| 2–4 years exposure | 1.181 (0.678 2.056) |
2.484** (1.261 4.894) |
1.292 (0.730 2.285) |
| 5 years or more exposure | 1.331 (0.833 2.126) |
2.686**
(1.483. 4.864) |
2.239*** (1.412 3.548) |
| Regression-adjusted model | |||
| No exposure (reference) | |||
| 1 year exposure | 0.927 (0.581 1.478) |
1.495 (0.762 2.934) |
1.303 (0.769 2.208) |
| 2–4 years exposure | 1.110 (0.603 2.041) |
2.399* (1.139 5.052) |
1.597 (0.861 2.961) |
| 5 years or more exposure | 1.213 (0.712 2.067) |
2.042* (0.999 4.176) |
1.539 (0.870 2.722) |
| Stabilized IPT weighted | |||
| No exposure (reference) | |||
| 1 year exposure | 1.108 (0.723. 1.699) |
1.467 (0.771. 2.790) |
1.319 (0.730. 2.384) |
| 2–4 years exposure | 1.140 (0.632. 2.056) |
1.956† (0.922. 4.152) |
1.070 (0.519. 2.206) |
| 5 years or more exposure | 1.355 (0.803. 2.287) |
1.927† (0.944. 3.933) |
1.686†
(0.990. 3.003) |
Note.
†
P<.1,
*
P<.05,
**
P<.01,
***
P<.001.
The regression-adjusted model controlled for the full set of covariates. The stabilized IPT weighted results employed the doubly robust estimator by weighting the regression using the stabilized weights and including the full set of covariates. For sleep duration, appropriate sleep duration (6–10 hours) is the reference category.