Table 3.

Axial length percent increase in experimental compared to control eyes.

			p* diff		p†, unadjusted difference			p‡, adjusted for IOP exposure
Strains	N	mean ± sd	bead--control	median	C57 young	C57 old	CD1	C57 young	C57 old	CD1
DBA/2J	25	16.7 ± 10.7%	<0.0001	15.8%	0.14	0.0007	0.0003	0.38	0.0026	0.0003
C57BL/6 younger	20	13.6 ± 14.1%	0.0004	12.4%		0.02	0.01		0.07	0.08
C57BL/6 older	24	6.8 ± 7.7 %	0.0003	4.9%			0.94			0.33
CD1	21	5.5 ± 6.7 %	0.001	5.7%

Sample number (N) and standard deviation (SD).

^*paired t test;

^†Mann-Whitney test; from multivariable linear regression,

^‡adjusting for positive integral IOP; for each strain values for 6 and 12 week duration are grouped together.