Table 2

Univariate analyses of factors associated with surgery duration

	Objective surgery duration		Patient-assessed surgery duration
Variable	Regression coefficient (95% CI) or mean (±SD)	p Value*	Regression coefficient (95% CI) or mean (±SD)	p Value*
Age	0.02 (−0.04 to 0.86)	0.469	0.11 (0.03 to 0.2)	0.011
Gender
Male	14.2 (±5.2)	0.317	15.8 (±6.2)	0.184
Female	13.6 (±4.8)		14.8 (±7.4)
Preoperative visual acuity	4.23 (1.75 to 6.72)	0.001	0 (−3.5 to 3.5)	1.00
Schedule on the day of surgery
Fasting time	0.27 (−0.04 to 0.59)	0.091	0.16 (−0.28 to 0.60)	0.477
Time interval between wake up and surgery	0.49 (0.02 to 0.95)	0.041	0.71 (0.07 to 1.36)	0.03
Waiting time in the department	1.15 (0.34 to 1.96)	0.006	1.05 (−0.07 to 2.17)	0.066
Sequence of surgery
First eye	14.1 (±5.4)	0.036	15.1 (±6.8)	0.632
Second eye	13.6 (±4.4)		15.5 (±7.0)
Surgeons’ experience
Senior	13.4 (±4.8)	<0.0001	15.0 (±6.7)	0.032
Junior	17.8 (±4.7)		17.8 (±7.4)
Pain assessment
Low pain score	13.2 (±4.5)	0.001	14.4 (±6.5)	<0.001
High pain score	15.5 (±5.7)		17.6 (±7.3)

*Linear regression for correlation tests and Student's t-test for mean comparison.