Figure 3 | Scientific Reports

Figure 3

From: The effect of intravenous granisetron on prophylactic ephedrine for preventing hypotension after general anaesthesia induction in elderly patients: a randomized controlled trial

Figure 3

Dose–response curve and 95% confidence interval for the ED50 of ephedrine in two groups. The ED50 of intravenous ephedrine dosage calculated by probit regression was 0.09 mg/kg (95% CI, 0.05–0.12 mg/kg) in group G and 0.14 mg/kg (95% CI, 0.12–0.16 mg/kg) in group C. ED50 effective dose in 50% of subjects, CI confidence interval.

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