Table 2 Comparison of incidence and severity of cough between the two groups [n (%)]
From: Prevention of sufentanil-induced cough during induction of general anesthesia by low-dose esketamine
|  | Group E (n = 50) | Group C (n = 49) | \(\chi\)2 | P |
|---|---|---|---|---|
Occurrence of cough | ||||
 Yes | 3 (6.0) | 17 (34.7) | 12.641 | < 0.001 |
 None | 47 (94.0) | 32 (65.3) |  |  |
Severity of cough | Â | Â | 6.555 | 0.038 |
 Mild | 3 (6.0) | 4 (8.2) |  |  |
 Moderate | 0 (0.0) | 7 (14.3) |  |  |
 Severe | 0 (0.0) | 6 (12.2) |  |  |