Table 1.
Patient demography.
| IC | Non-IC | ||
|---|---|---|---|
| n =10192 | n =30576 | ||
| Characteristic | N (%) | N (%) | p-value |
| Gender | |||
| Female | 8233(80.78) | 24699(80.78) | 1.0000 |
| Male | 1959(19.22) | 5877(19.22) | |
| Average age, mean±SD | 49.50±16.73 | 49.49±16.72 | 0.9716 |
| Age (years) | |||
| <40 | 3132(30.73) | 9382(30.68) | 0.9936 |
| 40-60 | 4399(43.16) | 13216(43.22) | |
| >60 | 2661(26.11) | 7978(26.09) | |
| DM | 842(8.26) | 1942(6.35) | <0.0001 |
| CAD | 702(6.89) | 1139(3.73) | <0.0001 |
| Renal disease | 260(2.55) | 337(1.10) | <0.0001 |
| Hyperlipidemia | 722(7.08) | 1463(4.78) | <0.0001 |
| HTN | 2026(19.88) | 4338(14.19) | <0.0001 |
| CCI score, mean±SD | 0.74±1.64 | 0.38±0.97 | <0.0001 |
| Geographic region | |||
| Northern | 5699(55.92) | 15608(51.05) | <0.0001 |
| Central | 1678(16.46) | 5428(17.75) | |
| Southern | 2498(24.51) | 8857(28.97) | |
| Eastern | 317(3.11) | 683(2.23) | |
| Income, NTD per month | |||
| <$15,840 | 4260(41.80) | 12532(40.99) | 0.1525 |
| $15,840~$25,000 | 3404(33.40) | 10180(33.29) | |
| >$25,000 | 2528(24.80) | 7864(25.72) |
IC: interstitial cystitis, DM: diabetes mellitus, CAD: coronary artery disease, HTN: hypertension; CCI: Charlson Comorbidity Index; NTD: New Taiwan dollar.