Table 1. Overall demographic characteristics of the patients before and after PS matching.
| Characteristics | Before PS matching | After PS matching | |||||||
|---|---|---|---|---|---|---|---|---|---|
| DMP patients (n=309) | Controls (n=893) | DMP patients (n=170) | Controls (n=170) | ||||||
| Age (mean ± SD) (years) | 72.9±8.9† | 72.3±10.3† | 72.6±9.7† | 72.7±8.4† | |||||
| Males (%) | 89.0‡ | 82.1‡ | 88.2 | 88.2 | |||||
| Race (%) | |||||||||
| Chinese | 76.4 | 74.4 | 78.8 | 78.2 | |||||
| Malay | 13.3 | 16.1 | 11.8 | 14.7 | |||||
| Indians | 7.1 | 6.7 | 6.5 | 7.1 | |||||
| Hospital (%) | |||||||||
| X | 9.1‡ | 13.3‡ | 10.6 | 10.6 | |||||
| Y | 43.0‡ | 19.5‡ | 62.9 | 58.8 | |||||
| Z | 47.6‡ | 67.2‡ | 26.5 | 30.6 | |||||
| Socio-economic status (%) | |||||||||
| A | 1.3‡ | 1.6‡ | 1.8 | 1.8 | |||||
| B | 21.4‡ | 35.6‡ | 35.3 | 38.2 | |||||
| C | 41.4‡ | 61.3‡ | 56.5 | 53.5 | |||||
| Co-morbidities (%) | |||||||||
| Asthma | 36.6 | 32.9 | 36.6 | 31.8 | |||||
| DM | 29.4 | 30.1 | 29.4 | 24.1 | |||||
| HT | 48.9 | 56.3 | 48.9 | 48.2 | |||||
| Stroke | 10.4 | 11.6 | 10.4 | 10.0 | |||||
| CHD | 34.0 | 28.4 | 34.0 | 30.0 | |||||
| HF | 16.8 | 20.9 | 16.8 | 17.1 | |||||
| Dyslipidemia | 59.5 | 61.4 | 59.5 | 61.8 | |||||
| Obesity | 33.3 | 24.6 | 33.3 | 27.1 | |||||
Comparisons were made using t-test† and unless noted, Z test for proportions. ‡, significant, unless noted, not significant. Socio-economic status A, B, C represent ward class A, B and C respectively. PS, propensity score.