Table 4. League table for PON.

Pro	0.81 (0.07,9.37)	0.65 (0.06,7.32)	0.40 (0.03,5.53)	0.29 (0.04,1.98)	0.23 (0.02,2.17)	0.20 (0.02,2.41)	0.19 (0.01,2.43)	0.19 (0.02,1.59)	0.18 (0.02,1.69)	0.14 (0.02,0.92)	0.12 (0.01,1.07)	0.05 (0.00,0.48)	0.06 (0.01,0.50)
1.24 (0.11,14.37)	Tro+Pro	0.80 (0.11,5.63)	0.50 (0.05,5.08)	0.36 (0.06,2.13)	0.29 (0.05,1.57)	0.24 (0.03,1.86)	0.24 (0.03,1.97)	0.23 (0.05,1.04)	0.22 (0.03,1.47)	0.17 (0.03,1.03)	0.15 (0.03,0.79)	0.06 (0.01,0.54)	0.07 (0.02,0.34)
1.55 (0.14,17.54)	1.25 (0.18,8.79)	Ram+Dex	0.62 (0.05,7.17)	0.45 (0.07,2.88)	0.36 (0.11,1.19)	0.30 (0.05,1.72)	0.29 (0.05,1.81)	0.29 (0.05,1.67)	0.27 (0.04,2.12)	0.21 (0.04,1.12)	0.19 (0.06,0.64)	0.07 (0.01,0.61)	0.09 (0.03,0.32)
2.48 (0.18,33.96)	2.00 (0.20,20.36)	1.60 (0.14,18.37)	Pal	0.72 (0.11,4.59)	0.57 (0.06,5.44)	0.48 (0.04,6.00)	0.47 (0.04,6.16)	0.47 (0.07,2.93)	0.44 (0.12,1.66)	0.34 (0.04,2.92)	0.30 (0.03,2.72)	0.12 (0.01,1.45)	0.15 (0.02,1.25)
3.46 (0.51,23.65)	2.79 (0.47,16.61)	2.23 (0.35,14.37)	1.39 (0.22,8.93)	Met	0.80 (0.16,3.99)	0.68 (0.09,4.82)	0.66 (0.09,4.97)	0.65 (0.20,2.13)	0.61 (0.17,2.23)	0.48 (0.13,1.77)	0.42 (0.09,1.93)	0.17 (0.03,1.04)	0.21 (0.05,0.87)
4.33 (0.46,40.68)	3.49 (0.64,19.23)	2.80 (0.84,9.34)	1.75 (0.18,16.58)	1.25 (0.25,6.25)	Ram	0.85 (0.22,3.28)	0.82 (0.17,4.01)	0.82 (0.19,3.55)	0.77 (0.12,4.71)	0.60 (0.15,2.36)	0.53 (0.23,1.23)	0.21 (0.03,1.37)	0.26 (0.12,0.56)
5.12 (0.42,63.07)	4.13 (0.54,31.77)	3.31 (0.58,18.75)	2.06 (0.17,25.58)	1.48 (0.21,10.55)	1.18 (0.30,4.59)	Gra	0.97 (0.14,7.02)	0.97 (0.15,6.13)	0.91 (0.11,7.67)	0.70 (0.12,4.20)	0.63 (0.15,2.67)	0.25 (0.03,2.22)	0.31 (0.08,1.19)
5.26 (0.41,67.19)	4.24 (0.51,35.48)	3.39 (0.55,20.81)	2.12 (0.16,27.70)	1.52 (0.20,11.49)	1.21 (0.25,5.91)	1.03 (0.14,7.40)	Dex+Gin	0.99 (0.14,6.83)	0.93 (0.10,8.38)	0.72 (0.12,4.49)	0.65 (0.17,2.47)	0.25 (0.03,2.35)	0.32 (0.07,1.40)
5.30 (0.63,44.59)	4.28 (0.96,18.96)	3.42 (0.60,19.59)	2.14 (0.34,13.38)	1.53 (0.47,4.99)	1.22 (0.28,5.31)	1.03 (0.16,6.57)	1.01 (0.15,6.94)	Tro	0.94 (0.27,3.31)	0.73 (0.17,3.06)	0.65 (0.16,2.60)	0.26 (0.04,1.74)	0.32 (0.09,1.13)
5.65 (0.59,53.78)	4.56 (0.68,30.48)	3.65 (0.47,28.20)	2.28 (0.60,8.63)	1.63 (0.45,5.96)	1.31 (0.21,8.02)	1.10 (0.13,9.34)	1.07 (0.12,9.68)	1.07 (0.30,3.77)	Ond	0.78 (0.14,4.19)	0.69 (0.12,3.96)	0.27 (0.03,2.26)	0.34 (0.06,1.79)
7.27 (1.08,48.74)	5.87 (0.97,35.50)	4.69 (0.89,24.69)	2.93 (0.34,25.08)	2.10 (0.57,7.81)	1.68 (0.42,6.65)	1.42 (0.24,8.47)	1.38 (0.22,8.58)	1.37 (0.33,5.76)	1.29 (0.24,6.93)	Dro	0.89 (0.26,3.08)	0.35 (0.10,1.26)	0.44 (0.13,1.44)
8.14 (0.93,71.03)	6.57 (1.27,34.07)	5.26 (1.55,17.79)	3.29 (0.37,29.40)	2.36 (0.52,10.69)	1.88 (0.81,4.34)	1.59 (0.37,6.77)	1.55 (0.40,5.93)	1.54 (0.38,6.15)	1.44 (0.25,8.22)	1.12 (0.33,3.86)	Dex	0.39 (0.07,2.33)	0.49 (0.26,0.93)
20.70 (2.09,204.70)	16.72 (1.84,151.83)	13.37 (1.65,108.55)	8.35 (0.69,101.45)	5.99 (0.96,37.33)	4.78 (0.73,31.24)	4.05 (0.45,36.33)	3.94 (0.42,36.54)	3.91 (0.57,26.65)	3.67 (0.44,30.31)	2.85 (0.80,10.21)	2.54 (0.43,15.04)	Mid	1.24 (0.22,7.12)
16.65 (1.99,139.58)	13.44 (2.91,62.17)	10.75 (3.17,36.46)	6.72 (0.80,56.40)	4.81 (1.15,20.21)	3.85 (1.79,8.26)	3.25 (0.84,12.57)	3.17 (0.71,14.05)	3.14 (0.88,11.17)	2.95 (0.56,15.50)	2.29 (0.70,7.53)	2.04 (1.07,3.90)	0.80 (0.14,4.60)	Pla

Dark gray: Comparison, Light gray: Column compared with row, White: Row compared with column. Data are RRs (95% CI) in the column-defining treatment compared with the row-defining treatment or row-defining treatment compared with the column-defining treatment. For column compared with row, RRs higher than 1 favour the column-defining treatment. For row compared to column, RRs lower than 1 favour the row-defining treatment. RR = risk ratio. CI = confidence interval.

Pro: proprofol; Tro: tropisetron; Ram: ramosetron; Dex: dexamethasone; Pal: palonosetron; Met: metoclopramide; Gra: granisetron; Gin: oral ginger; Ond: ondansetron; Dro: droperidol; Mid: midazolam; Pla: placebo