Table 2 Comparision of the subject primary outcome, and secondary outcomes

Postoperative 24 h sufentanil dosage(μg), (mean ± SD)^a

49.29 ± 16.76

31.42 ± 18.81

 < 0.001^*

Sufentanil dosage at 6 h interval(μg), (mean ± SD)^b

  0–6 h

2.71 ± 2.33

0 ± 0

0.122

  6–12 h

8.20 ± 5.07

4.68 ± 3.67

0.044^*

  12–18 h

18.89 ± 7.87

10.86 ± 7.65

 < 0.001^*

  18–24 h

19.48 ± 7.17

16.15 ± 9.34

0.058

  Remifentanil dosage(mg), (mean ± SD)^a

1.62 ± 0.52

1.17 ± 0.50

0.003^*

  Propofol dosage(mg), (mean ± SD)^a

337.08 ± 48.82

355.01 ± 52.78

0.230

  Time to removal of laryngeal mask(mins), (mean ± SD)^a

17.92 ± 5.98

10.58 ± 3.74

0.001^*

  Time to the first analgesic require(mins), (mean ± SD)^c

680.33 ± 311.95

1147.73 ± 351.93

 < 0.001^*

  Number of use remedial analgesia, n(%)^d

7(29.2)

2(7.69)

0.063

  The incidence of PONV, n(%)^d

7(29.2)

4(14.8)

0.210