Table 3.
Incidence, incidence rate ratio and hazard ratio of time until different type of psychiatric disorders between IDA group and non-IDA group
| IDA | Non-IDA | |||||||
|---|---|---|---|---|---|---|---|---|
| Variables | Event | PY | Ratea | Event | PY | Rate† | IRR | Adjusted HR‡ |
| (95% CI) | (95% CI) | |||||||
| Overall | 5408 | 118,071.60 | 45.80 | 8506 | 253,762.48 | 33.52 | 1.37 (1.32–1.41)*** | 1.52 (1.45–1.59)*** |
| Anxiety disorders | 1183 | 143,459.13 | 8.25 | 1739 | 291,222.14 | 5.97 | 1.38 (1.28–1.49)*** | 1.47 (1.33–1.63)*** |
| Depression | 940 | 144,477.03 | 6.51 | 1397 | 292,544.68 | 4.78 | 1.36 (1.25–1.48)*** | 1.49 (1.33–1.66)*** |
| Psychotic disorders | 138 | 148,802.23 | 0.93 | 216 | 298,418.90 | 0.72 | 1.28 (1.04–1.59)* | 1.41 (1.07–1.86)* |
| Bipolar disorders | 70 | 149,237.96 | 0.47 | 130 | 298,949.78 | 0.43 | 1.08 (0.81–1.44) | 1.18 (0.79–1.74) |
| Sleep disorders | 4870 | 121,755.17 | 40.00 | 7590 | 259,317.13 | 29.27 | 1.37 (1.32–1.42)*** | 1.53 (1.46–1.61)*** |
| RLS | 54 | 149,295.29 | 0.36 | 67 | 299,237.33 | 0.22 | 1.62 (1.13–2.31)** | 1.30 (0.80–2.12) |
IRR Incidence rate ratio, PY Person-years; aRate, incidence rate in per 1000 person-years; ***p < 0.001, **p < 0.01, *p < 0.05; ‡Adjusted for age, gender, income level, hypertension, DM, dyslipidemia, CAD, stroke, CKD, cirrhosis, hyperthyroidism, hypothyroidism, COPD, iron supplementation and area