Table 3.
Comparison of the amount of pain relief between primiparas and multiparas.
Variables | Primiparas (n = 82) | Multiparas(n = 99) | z/χ2 | P |
---|---|---|---|---|
Duration of labor analgesia (h) | 8.00 (4.50, 10.77) | 3.25 (1.93, 6.23) | 6.32a | <0.001 |
Patients requiring manual bolus, yes | 75 (91.5) | 94 (94.9) | 0.88b | 0.348 |
Total PCEA manual boluses | 12.48 (6.54, 17.42) | 8.20 (3.63, 13.88) | 2.80a | 0.005 |
PCEA successful manual boluses per hour | 1.77 (0.90, 2.47) | 2.68 (1.65, 3.85) | 4.52a | <0.001 |
Hourly analgesic consumption (mL/h) | 17.24 (11.52, 21.36) | 23.00 (16.00, 28.25) | 4.63a | <0.001 |
Average analgesic consumption (mL/h·kg) | 0.26 (0.19, 0.35) | 0.35 (0.24, 0.45) | 3.92a | <0.001 |
Note: Data are n (%), Median (P25, P75). a Mann–Whitney tests; b chi-square tests. PCEA = patient-controlled epidural analgesia.