Characteristics | Severe pertussis group (n = 63) | Non-severe pertussis (n = 189) | t/χ2 | P |
---|---|---|---|---|
Duration of disease (days) | 12.0 (7.0, 14.5) | 13.0 (10.0, 15.0) | − 0.857 | 0.391 |
Fever | ||||
No | 13 (20.6) | 90 (47.6) | 14.236 | < 0.001 |
Yes | 50 (79.4) | 99 (52.4) | ||
Cyanosis [(n) %)] | ||||
No | 19 (30.2) | 121 (64.0) | 21.943 | < 0.001 |
Yes | 44 (69.8) | 68 (36.0) | ||
Decreased heart rate [(n) %)] | ||||
No | 53 (84.1) | 187 (98.9) | 19.717 | < 0.001 |
Yes | 10 (15.9) | 2 (1.1) | ||
Pulmonary rales [(n) %)] | ||||
No | 9 (14.3) | 94 (49.7) | 25.235 | < 0.001 |
Yes | 54 (85.7) | 95 (50.3) | ||
Breathing heavily [(n) %)] | ||||
No | 45 (71.4) | 188 (99.5) | 53.299 | < 0.001 |
Yes | 18 (28.6) | 1 (0.5) |