Table 3. – Statistical analysis of the number of admissions, in-hospital deaths, and in-hospital fatality rate in March to May of 2019 and 2020 and their comparison.
| Data recorded in | Percent difference 2020 - 2019 | Estimates for 2020 March-May | Confidence interval (95% CI) | p-value | ||
|---|---|---|---|---|---|---|
| 2019 March - May | 2020 March - May | |||||
| Admissions | ||||||
| Stroke | 45 214 | 39 900 | -12% | 46 199 | 48 586 – 43 811 | 0.0082 |
| Hypertensive diseases | 18 278 | 12 229 | -33% | 18 053 | 20 331 – 15 773 | 0.0088 |
| Rheumatic diseases | 2403 | 1701 | -29% | 2 266 | 2683 – 1847 | 0.0294 |
| Acute myocardial infarction | 31 566 | 30 298 | -4% | 33 084 | 35 550 – 30 616 | 0.0405 |
| Heart failure | 47 250 | 39 667 | -16% | 46 077 | 49 847 – 42 305 | 0.0191 |
| Cardiovascular malformations | 4489 | 3692 | -18% | 4602 | 4883 – 4320 | 0.0055 |
| Conduction disorders and cardiac arrhythmias | 16 875 | 13 977 | -17% | 17 212 | 18 316 – 16 107 | 0.0067 |
| Cardiovascular comorbidities | 166 075 | 141 464 | -15% | 167 491 | 169 772 – 165 209 | 0.0005 |
| In-hospital deaths | ||||||
| Stroke | 6411 | 5871 | -8% | 6363 | 7364 - 5361 | 0.1439 |
| Hypertensive diseases | 336 | 289 | -14% | 309 | 361 - 256 | 0.1926 |
| Rheumatic diseases | 180 | 144 | -20% | 161 | 262 - 58 | 0.3414 |
| Acute myocardial infarction | 3081 | 2805 | -9% | 3094 | 3500 - 2686 | 0.0872 |
| Heart failure | 5356 | 4845 | -10% | 5212 | 5612 - 4811 | 0.0579 |
| Cardiovascular malformations | 307 | 288 | -6% | 297 | 382 - 210 | 0.3995 |
| Conduction disorders and cardiac arrhythmias | 1952 | 2053 | 5% | 1986 | 2582 - 1388 | 0.3863 |
| Cardiovascular comorbidities | 17 623 | 16 295 | -8% | 17 420 | 19 062 – 15 777 | 0.0918 |
| In-hospital fatality rate | ||||||
| Stroke | 14.18 | 14.71 | 4% | 13.72% | 15.33 - 12.10 | 0.1067 |
| Hypertensive diseases | 1.84 | 2.36 | 29% | 1.72% | 2.11 - 1.34 | 0.0198 |
| Rheumatic diseases | 7.49 | 8.47 | 13% | 7.08% | 10.19 - 3.97 | 0.1616 |
| Acute myocardial infarction | 9.76 | 9.26 | -5% | 9.20% | 10.21 - 8.18 | 0.4363 |
| Heart failure | 11.34 | 12.21 | 8% | 11.31% | 12.01 - 10.60 | 0.0322 |
| Cardiovascular malformations | 6.84 | 7.80 | 14% | 6.40% | 8.26 - 4.54 | 0.0798 |
| Conduction disorders and cardiac arrhythmias | 11.57 | 14.69 | 27% | 11.57% | 14.90 - 8.24 | 0.0559 |
| Cardiovascular comorbidities | 10.61 | 11.52 | 9% | 10.39% | 11.26 - 9.52 | 0.0318 |
Confidence intervals and p-values calculated by using Student t distribution, considering the differences between the value projected and the value recorded in 2020.