Logistic Regression Analysis for Sleep Quality in Japanese Individuals With Constipationa
| Variables | Univariate | Multivariate | |||||
|---|---|---|---|---|---|---|---|
| OR | 95% CI | OR | 95% CI | ||||
| Sex (male vs female) | 0.800 | 0.692-0.925 | 0.003 | 0.783 | 0.675-0.907 | 0.001 | |
| Age (1-year increment) | 1.012 | 1.007-1.018 | < 0.001 | 1.012 | 1.006-1.017 | < 0.001 | |
| Strong awareness of constipation (yes vs no) | 0.819 | 0.708-0.948 | 0.007 | - | - | - | |
| Defecation improves abdominal pain and gastrointestinal symptoms (yes vs no) | 0.957 | 0.816-1.122 | 0.585 | - | - | - | |
| Onset associated with a change in frequency of stools (yes vs no) | 0.728 | 0.629-0.843 | < 0.001 | 0.832 | 0.714-0.968 | 0.018 | |
| Onset associated with a change in form (appearance) of stool (yes vs no) | 0.753 | 0.650-0.871 | < 0.001 | - | - | - | |
| Straining during at least 25% of defecations |
0.762 | 0.653-0.890 | < 0.001 | - | - | - | |
| Lumpy or hard stools in at least 25% of defecations |
0.790 | 0.680-0.918 | 0.002 | - | - | - | |
| Sensation of incomplete evacuation for at least 25% of defecations |
0.587 | 0.503-0.686 | < 0.001 | 0.627 | 0.533-0.737 | < 0.001 | |
| Sensation of anorectal obstruction/blockage for at least 25% of defecations |
0.672 | 0.567-0.796 | < 0.001 | - | - | - | |
| Manual maneuvers to facilitate at least 25% of defecations |
0.575 | 0.408-0.811 | 0.002 | 0.696 | 0.491-0.988 | 0.043 | |
| Loose stools are rarely present without the use of laxatives (yes vs no) | 0.924 | 0.795-1.074 | 0.304 | - | - | - | |
| Bristol stool form scale score | |||||||
| 1-2 or 6-7 (abnormal) |
1.000 | Reference | - | 1.000 | Reference | - | |
| 3-5 (normal) |
1.329 | 1.145-1.542 | < 0.001 | 1.217 | 1.044-1.419 | 0.012 | |
aUnivariate outcomes were obtained for all survey items related to constipation symptoms with sleep status (good or poor) as the objective variable. Likelihood ratio was used for variable selection in multivariate analysis.
bχ2 test.
cRome III criteria.
dN = 3000 for all, with the exception of Bristol stool form scale score, where n = 1200 for abnormal scores and n = 1800 for normal scores.