Table 2.
Prevalence of DSM-IV insomnia in presence or absence of specific medical disorders.
| Medical condition (number with disease/total n, % with disease) | Unadjusted prevalence of insomnia if disease present (%) | Unadjusted prevalence of insomnia if disease absent (%) | Adjusted odds ratio (95% CI) | P |
|---|---|---|---|---|
| Ulcer (307/2919) | 33.0 | 20.1 | 2.1 (1.6-2.7) | < 0.001 |
| Neurological problem (691/2532) | 33.3 | 20.6 | 2.0 (1.5-2.7) | < 0.001 |
| COPD (282/2944) | 32.9 | 20.3 | 1.9 (1.5-2.5) | < 0.001 |
| Migraines (767/2461) | 30.5 | 18.5 | 1.8 (1.5-2.1) | < 0.001 |
| Arthritis (800/2430) | 27.1 | 19.5 | 1.8 (1.5-2.2) | < 0.001 |
| Menstrual (388/1252) | 32.2 | 22.3 | 1.7 (1.3-2.1) | < 0.001 |
| Asthma (409/2824) | 29.9 | 20.1 | 1.6 (1.3-2.0) | < 0.001 |
| Heart disease (202/3027) | 26.8 | 21.0 | 1.6 (1.2-2.3) | 0.004 |
| Hypertension (829/2045) | 24.7 | 20.2 | 1.5 (1.2-1.8) | < 0.001 |
| Diabetes (202/3030) | 25.6 | 21.1 | 1.4 (1.05-2.0) | 0.047 |
| Colitis (93/3125) | 27.4 | 21.2 | 1.4 (0.9-2.3) | 0.13 |
| Cancer (152/3081) | 23.0 | 21.3 | 1.2 (0.8-1.8) | 0.32 |
| Thyroid disorders (251/2979) | 23.8 | 21.2 | 1.1 (0.8-1.6) | 0.41 |
Adjusted odds ratio refers to the odds of developing insomnia in presence of that particular disorder, adjusted for age and gender. P values denote significance for adjusted odds ratios.