Table 3.
Bivariate and multivariate analyses of in-hospital death rates*
| Factor | In-hospital mortality rate† | Correlation coefficient |
P value | |
| Mean (SD) | Median (IQR) | |||
| Bivariate analysis | ||||
| Zone H1a‡ | 39.2 (21.8) | 37.6 (32.9) | – | 8.84×10–10 |
| Zone H1b‡ | 51.2 (31.4) | 46.6 (34.0) | – | |
| Zone H1c‡ | 18.3 (11.8) | 14.3 (17.2) | – | |
| Zone H2‡ | 10.2 (8.2) | 8.1 (7.9) | – | |
| Zone H3‡ | 14.0 (6.0) | 12.2 (4.7–) | – | |
| Population density§ | — | — | 0.39 | 9.42×10–5 |
| Age >59 years, %§ | — | — | –0.45 | 5.36×10–6 |
|
Multivariate analysis (reference zone H2) |
Regression coefficient (95% CI) | |||
| Zone H1a | 20.8 (12.0 to 29.6) | 1.21×10–5 | ||
| Zone H1b | 30.1 (21.3 to 38.9) | 2.41×10–9 | ||
| Zone H1c | 7.0 (–0.5 to 14.7) | 0.074 | ||
| Zone H3 | –1.4 (–13.1 to 10.1) | 0.803 | ||
| Population density > third quartile | 8.5 (0.6 to 16.4) | 0.0361 | ||
| Age >59 years > third quartile | –3.8 (–10.6 to 2.9) | 0.272 | ||
| Male sex, % > third quartile | –2.5 (–8.4 to 3.3) | 0.399 | ||
IQR (third – first quartile).
*Multiple-linear regression excluding outliers with categorised quantitative data.
†Number per 100 000 inhabitants.
‡Kruskall-Wallis test.
§Pearson’s correlation test.