Table 1.

The Proportion of Visits with Duration Calculated by the Four Different Methods

	Monofocal Group	Presby-IOL Group	p-value
Proportion of visits for which duration was calculated as the difference of time patient was sent to front desk and check-in time.	7.6%	9.4%	0.177
Proportion of visits for which duration was calculated as the difference of time patient was sent to front desk and tech pick-up time.	49.5%	47.4%
Proportion of visits for which duration was calculated as the difference of check-out time and check-in time.	33.1%	35.0%
Proportion of visits for which duration was calculated as the difference of check-out time and tech pick-up time.	10.0%	8.1%