Table 2.
Psychiatric disorders and breathing-related sleep disorder by insomnia diagnosis.
| Comorbidity | Total (N = 2304) | Insomnia diagnosis | Analysis | |||||
|---|---|---|---|---|---|---|---|---|
| Yes (N = 130) | No (N = 2174) | Test statistic | p | |||||
| Psychiatric disorders | ||||||||
| Adjustment | χ2(1) = 1.03 | 0.309 | ||||||
| Yes | 238 | (10.3) | 10 | (4.2) | 228 | (95.8) | ||
| No | 2066 | (89.7) | 120 | (5.8) | 1946 | (94.2) | ||
| Anxiety | χ2(1) = 2.66 | 0.103 | ||||||
| Yes | 365 | (15.8) | 14 | (3.8) | 351 | (96.2) | ||
| No | 1939 | (84.2) | 116 | (6.0) | 1823 | (94.0) | ||
| Bipolar | χ2(1) = 2.01 | 0.156 | ||||||
| Yes | 203 | (8.8) | 7 | (3.4) | 196 | (96.6) | ||
| No | 2101 | (91.2) | 123 | (5.9) | 1978 | (94.1) | ||
| Depression | χ2(1) = 0.27 | 0.600 | ||||||
| Yes | 430 | (18.7) | 22 | (5.1) | 408 | (94.9) | ||
| No | 1874 | (81.3) | 108 | (5.8) | 1766 | (94.2) | ||
| Alcohol/Substance | χ2(1) = 0.04 | 0.836 | ||||||
| Yes | 261 | (11.3) | 14 | (5.4) | 247 | (94.6) | ||
| No | 2043 | (88.7) | 116 | (5.7) | 1927 | (94.3) | ||
| N Axis I Co-morbidities | 0.65 ± 0.85 | 0.52 ± 0.91 | 0.66 ± 0.85 | U(1) = 7.02 | 0.008 | |||
| N Axis I Co-morbidities | χ2(3) = 9.73 | 0.021 | ||||||
| 0 | 1266 | (54.9) | 88 | (7.0) | 1178 | (93.0) | ||
| 1 | 683 | (29.6) | 25 | (3.7) | 658 | (96.3) | ||
| 2 | 265 | (11.5) | 12 | (4.5) | 253 | (95.5) | ||
| 3+ | 90 | (3.9) | 5 | (5.6) | 85 | (94.4) | ||
| Breathing-related sleep disorder | χ2(1) = 12.7 | <0.001 | ||||||
| Yes | 385 | (16.7) | 7 | (1.8) | 378 | (98.2) | ||
| No | 1919 | (83.3) | 123 | (6.4) | 1796 | (93.6) | ||
Notes: Data are presented as mean ± SD and N (%N). All comorbidities diagnosed prior to diagnosis of insomnia.