. 2021 May 21;54(1):24–31. doi: 10.1111/apt.16404

TABLE 4.

Incidence of vomiting 24 and 48 h after the first dose of treatment (secondary outcome, per‐protocol analysis)

	24 h after the first dose of treatment	48 h after the first dose of treatment
Placebo event rate	61/71 0.86 [0.78 to 0.94]	41/71 0.58 [0.46 to 0.69]
Ginger event rate	45/70 0.64 [0.53 to 0.76]	27/70 0.39 [0.27 to 0.50]
Absolute risk reduction (ginger‐placebo)	−0.22 [−0.38 to −0.06] ^a P = 0.005 (Wald) ^b	−0.19 [−0.38 to −0.01] ^a P ^b = 0.04 (Wald) ^b

24 h after the first dose of treatment

48 h after the first dose of treatment

Placebo event rate

61/71

0.86 [0.78 to 0.94]

41/71

0.58 [0.46 to 0.69]

Ginger event rate

45/70

0.64 [0.53 to 0.76]

27/70

0.39 [0.27 to 0.50]

Absolute risk reduction

(ginger‐placebo)

−0.22 [−0.38 to −0.06] ^a

P = 0.005 (Wald) ^b

−0.19 [−0.38 to −0.01] ^a

P ^b = 0.04 (Wald) ^b

Values are proportions and 95% confidence intervals (in square brackets) from binomial regression.

^{^a}

Bonferroni's corrected 95% confidence interval (correction for two comparisons).

^{^b}

Bonferroni's corrected p value (correction for two comparisons).