Table 4

Spearman correlation coefficients (r) between intrapair differences in duration of diabetes and intrapair differences in refraction and its components, in each of the three zygosity groups

		Eye		MZ				DZss				DZos
		Eye		n	r			p	n			r	p	n	r	p
Refraction	R	16	0.39	0.135		14	−0.76	0.002		15	−0.14	0.612
	L	16	0.46	0.075		14	−0.65	0.012		15	−0.11	0.703
Axial length	R	15	−0.42	0.121		13	0.66	0.014		15	−0.01	0.960
	L	15	−0.45	0.092		13	0.62	0.024		15	−0.18	0.516
Corneal curvature	R	16	0.16	0.549		14	0.48	0.094		15	0.05	0.879
	L	16	0.26	0.333		14	0.48	0.094		15	0.24	0.426
Anterior chamber depth	R	15	−0.57	0.026		13	−0.43	0.146		15	−0.24	0.383
	L	15	−0.57	0.028		13	−0.28	0.415		15	−0.32	0.240
Lens thickness	R	15	0.75	0.001		13	0.57	0.041		15	0.56	0.029
	L	15	0.65	0.008		13	0.60	0.031		15	0.62	0.013
Lens power	R	15	−0.25	0.376		13	0.34	0.263		14	−0.26	0.375
	L	15	0.09	0.742		13	0.38	0.194		14	−0.44	0.114

MZ = monozygotic twins; DZss = dizygotic twins of same sex; DZos = dizygotic twins of opposite sex.