Table 2

Univariate analyses of factors associated with surgery duration

Objective surgery durationPatient-assessed surgery duration
VariableRegression coefficient (95% CI) or mean (±SD)p Value*Regression coefficient (95% CI) or mean (±SD)p Value*
Age0.02 (−0.04 to 0.86)0.4690.11 (0.03 to 0.2)0.011
Gender
 Male14.2 (±5.2)0.31715.8 (±6.2)0.184
 Female13.6 (±4.8)14.8 (±7.4)
Preoperative visual acuity4.23 (1.75 to 6.72)0.0010 (−3.5 to 3.5)1.00
Schedule on the day of surgery
 Fasting time0.27 (−0.04 to 0.59)0.0910.16 (−0.28 to 0.60)0.477
 Time interval between wake up and surgery0.49 (0.02 to 0.95)0.0410.71 (0.07 to 1.36)0.03
 Waiting time in the department1.15 (0.34 to 1.96)0.0061.05 (−0.07 to 2.17)0.066
Sequence of surgery
 First eye14.1 (±5.4)0.03615.1 (±6.8)0.632
 Second eye13.6 (±4.4)15.5 (±7.0)
Surgeons’ experience
 Senior13.4 (±4.8)<0.000115.0 (±6.7)0.032
 Junior17.8 (±4.7)17.8 (±7.4)
Pain assessment
 Low pain score13.2 (±4.5)0.00114.4 (±6.5)<0.001
 High pain score15.5 (±5.7)17.6 (±7.3)
  • *Linear regression for correlation tests and Student's t-test for mean comparison.