Table 3.

Evaluation of light scattering intensity in the six lens layers by multiple regression analysis using the stepwise method in all subjects (n= 239)

Layer of lens	Variable	Parameter estimate (95% CI)	Pvalue
Anterior capsule
	Age	0.691 (0.616–0.766)	<0.0001
Most transparent layer of the anterior superficial cortex
	Age	0.153 (0.035–0.270)	0.011
	Workplace	0.580 (–0.291–1.452)	0.191
	Smoking	–0.003 (–0.007–0.001)	0.094
Anterior adult nucleus
	Radiation exposure	2.307 (–0.620–5.233)	0.122
	Age	2.644 (2.288–2.999)	<0.0001
	Work place	1.793 (–0.910–4.496)	0.192
Anterior fetal nucleus
	Age	1.405 (1.235–1.574)	<0.0001
	Smoking	0.003 (–0.002–0.008)	0.290
	Wearing glasses	–1.072 (–2.785–0.641)	0.219
Central clear zone
	Age	1.132 (1.057–1.207)	<0.0001
	Smoking	0.004 (0.001–0.006)	0.002
Posterior subcapsular region
	Radiation exposure	2.089 (0.466–3.711)	0.012
	Age	–0.307 (–0.528 to –0.086)	0.007
	Smoking	–0.004 (–0.010–0.003)	0.277
	Wearing glasses	0.925 (–0.735–2.586)	0.273

CI = confidence interval.