Table 3.
Self-reported diseases and sleep disorders in chronic pain patients sleeping normally or with sleep problems.
| n* | Sleeping normally | Sleep problems | P |
|---|---|---|---|
| 60 | 199 | ||
| Self-reported diseases: n (%) | |||
| Hypertension | 14 (23.3) | 63 (31.7) | 0.22 |
| Heart failure | 2 (3.3) | 4 (2.0) | 0.63 |
| Angina pectoris | 0 (0.0) | 13 (6.5) | 0.04 |
| Diabetes | 6 (10.0) | 22 (11.1) | 0.81 |
| Asthma | 1 (1.7) | 39 (19.6) | 0.001 |
| COPD | 1 (1.7) | 7 (3.5) | 0.69 |
| RA | 7 (11.7) | 5 (2.5) | 0.01 |
| Other joint disease | 11 (18.3) | 64 (32.3) | 0.04 |
| Low back problems | 14 (23.3) | 109 (55.1) | <0.001 |
| Depression | 3 (5.0) | 62 (31.6) | <0.001 |
| Psychiatric disorder other than depression | 1 (1.7) | 18 (9.0) | 0.09 |
| Sleep disorders | |||
| RLS symptoms (3 or more nights per week): n (%) | 7 (11.7) | 66 (33.2) | 0.001 |
| Self-reported OSA: n (%) | 4 (6.7) | 30 (15.1) | 0.12 |
*
Differences in n with respect to original categorization are due to missing data. Bold indicates P values <0.05.
COPD, chronic obstructive pulmonary disease; OSA, obstructive sleep apnoea; RA, rheumatoid arthritis; RLS, restless legs syndrome.