Gender differences in refraction prediction error of five formulas for cataract surgery

BMC Ophthalmology

Table 5 Mean Absolute Error (MAE) after standard optimization and optimization by gender

Formula	Mean Absolute Error		% Reduction in Mean Absolute Error	P-value^a
Formula	Standard Optimization	Optimized by Gender	% Reduction in Mean Absolute Error	P-value^a
Holladay	0.341	0.337	1.177	0.15
SRK/T	0.348	0.340	2.249	0.02*
Hoffer Q	0.367	0.363	1.074	0.002*
Haigis	0.335	0.334	0.162	0.46
Barrett	0.308	0.307	0.418	0.23

*Indicates statistical significance at the 0.05 level
^a Differences between Mean Absolute Error (MAE) after standard optimization versus optimization by gender was evaluated with Wilcoxon test

ISSN: 1471-2415