Table3 The comparison of underlying diseases
PRF group (n = 37) | Control group (n = 626) | t | P | |
|---|---|---|---|---|
Pulmonary hypertension (n) | 11 | 48 | 20.974 | < 0.001 |
Obstructive pulmonary disease (n) | 5 | 1 | 69.467 | < 0.001 |
Bronchiectasis and emphysema (n) | 8 | 2 | 106.714 | < 0.001 |
Previous history of respiratory failure (n) | 7 | 2 | 90.254 | < 0.001 |
Hypertension (n) | 5 | 107 | 0.319 | 0.572 |
Diabetes (n) | 9 | 151 | 0.001 | 0.978 |
Bed time (d) | 6.92 ± 2.31 | 6.89 ± 2.42 | 0.073 | 0.942 |
Hypoproteinemia (n) | 16 | 126 | 11.091 | 0.001 |