| Group M (325) | Group F (325) |
Pruritus (n) | 3% (9) | 2% (6) |
Nause (n) | 6.8% (22) | 5% (16) |
Respiratory depression (n) | 0% (0) | 0% (0) |
Seadation score (n, 2, 3, 4) | 300/20/5 | 298/15/12 |
Bradicardia | 10% (32) | 12% (39) |