Table 3.

Correlation matrix showing the correlation between ECLoss% (percentage of postoperative endothelial cell loss) at 3 months and different phaco parameters

			Age	CDE	Torsional T.	Volume	Phaco T.	Average Phaco Power	Average Phaco Power/3	Aspiration T.
Spearman’s rho	ECLoss%	Correlation coefficient	−0.077	0.425	0.334	0.278	0.345	0.307	0.343	0.176
		Sig. (2-tailed)	0.406	0.000	0.000	0.002	0.000	0.001	0.000	0.054
		N	120	120	120	120	120	120	120	120

Note: Spearman’s rank-order correlation coefficient, rho, (ρ) was used to evaluate the relationship because at least one of the continuous variables is not normally distributed.

Abbreviations: ECLoss%, percentage of endothelial cell loss; US Tot. Eq. P/3, ultrasonic total equivalent power in position 3; Avg_Phaco_Power/3, Average phaco power in position 3; Eq. Avg. Tor. Ampl/3, Equivalent average torsional amplitude in position 3; CDE, cumulative dissipated energy. Torsional T, torsional time, Aspiratio T, Aspiration time; Phaco T, phaco time.