Table 3. The association of residual refractive errors with age, sex, and AL using simple and multiple logistic regression models.

Variable	Simple		Multiple
	OR (95%CI)	P	OR (95%CI)	P
Predictability ±0.25 D
Age (y)	0.98 (0.97-1.00)	0.010	0.98 (0.97-0.99)	0.007
Sex (male/female)	1.20 (0.97-1.47)	0.090		NS
DM (yes/no)	1.12 (0.91-1.38)	0.293		NS
AL (22-24.5 mm)	1		1
AL (<22 mm)	0.70 (0.50-0.98)	0.037	0.69 (0.49-0.97)	0.032
AL (>24.5 mm)	0.66 (0.46-0.95)	0.024	0.63 (0.44-0.91)	0.014
Predictability ±0.50 D
Age (y)	0.98 (0.97-0.99)	0.005	0.98 (0.97-0.99)	0.004
Sex (male/female)	1.06 (0.87-1.29)	0.550		NS
DM (yes/no)	1.31 (1.07-1.60)	0.008		NS
AL (22-24.5 mm)	1		1
AL (<22 mm)	0.88 (0.65-1.19)	0.409	0.87 (0.64-1.18)	0.373
AL (>24.5 mm)	0.59 (0.43-0.82)	0.002	0.57 (0.41-0.79)	<0.001
Predictability ±0.75 D
Age (y)	0.97 (0.96-0.99)	<0.001	0.97 (0.96-0.99)	<0.001
Sex (male/female)	1.01 (0.82-1.25)	0.902		NS
DM (yes/no)	1.18 (0.95-1.47)	0.128		NS
AL (22-24.5 mm)	1		1
AL (<22 mm)	1.03 (0.74-1.44)	0.870	1.01 (0.72-1.42)	0.935
AL (>24.5 mm)	0.48 (0.35-0.66)	<0.001	0.45 (0.32-0.63)	<0.001
Age (y)	0.96 (0.94-0.98)	<0.001	0.96 (0.94-0.97)	<0.001
Predictability ±1.00 D
Sex (male/female)	1.05 (0.83-1.34)	0.680		NS
DM (yes/no)	1.20 (0.93-1.54)	0.153		NS
AL (22-24.5 mm)	1		1
AL (<22 mm)	0.83 (0.57-1.21)	0.341	0.81 (0.56-1.19)	0.285
AL (>24.5 mm)	0.45 (0.31-0.63)	<0.001	0.41 (0.28-0.58)	<0.001

NS: Not significant; DM: Diabetic mellitus; AL: Axial length; OR: Odds ratio.