The propofol-sparing effect of intravenous lidocaine in elderly patients undergoing colonoscopy: a randomized, double-blinded, controlled study

Table 3 Comparison of propofol doses between the two groups

Items	NS + P group (n = 40)	L + P group (n = 39)
Total propofol (mg) (95% CI)	136.8 (104.6, 175.8) (111.9–138.4)	122.4 (93.0, 162.0) (141.7–166.3)
Supplemental propofol (mg) (95% CI)	69.9 ± 39.2 (57.7–82.1)	51.5 ± 38.6^# (39.4–63.6)
“Unit propofol” (mg kg⁻¹ min⁻¹)	0.18 ± 0.05	0.14 ± 0.04^*
Frequency of supplemental boluses (times)	2.1 ± 1.1	1.4 ± 0.9^**

Compared with NS + P group, ^*P = 0.002, ^#P = 0.039, ^**P = 0.003
Normally distributed data were expressed as mean ± standard deviation and the data that does not conform to the normal distribution were expressed as p₅₀ (p₂₅, p₇₅)

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