Prevalence of chronic health conditions by depressive symptoms: %
| Chronic health condition | Depressive symptoms | P value* | |
| Present (n=493) | Absent (n=1295) | ||
| Hypertension | 28.4 | 38.7 | <0.001 |
| Lumbar diseases | 21.7 | 23.0 | 0.555 |
| Dyslipidaemia | 16.2 | 20.5 | 0.043 |
| Digestive diseases | 19.3 | 16.8 | 0.226 |
| Vision abnormalities | 11.6 | 19.5 | <0.001 |
| Skin diseases | 21.3 | 13.8 | <0.001 |
| Mental disorders | 25.2 | 8.2 | <0.001 |
| Chronic respiratory diseases | 13.2 | 10.4 | 0.098 |
| Arthritis or rheumatism | 9.5 | 11.8 | 0.171 |
| Diabetes | 9.1 | 11.6 | 0.137 |
| Urologic diseases | 7.7 | 10.3 | 0.091 |
| Malignancy | 7.7 | 7.1 | 0.660 |
| Cardiac diseases | 6.7 | 7.0 | 0.804 |
| Kidney diseases | 4.3 | 4.3 | 0.952 |
| Endocrine diseases | 3.4 | 4.4 | 0.366 |
| Stroke | 3.4 | 3.2 | 0.828 |
| Neurologic diseases | 2.0 | 1.5 | 0.401 |
*P value by χ2 test.