Table 6

Estimates of the effect of each study factor on the odds of non-certification

Study factorWestern Eye Hospital (n=129)Moorfields Eye Hospital II (n=194)
Crude OR (95% CI)Adj OR (95% CI)Crude OR (95% CI)Adj OR (95% CI)
Severity of VI:
Blind1111
 P sight4.9 (2.2, 10.8)4.2 (1.9, 9.6)2.9 (1.5, 5.5)3.4 (1.7, 6.8)
Cert on field alone:
No1111
 Yes1.3 (0.6, 3.0)1.7 (0.7, 4.3)4.2 (1.3, 13.0)3.6 (1.0, 12.7)
Sex:
Women1111
 Men0.7 (0.3, 1.5)0.8 (0.3, 1.8)1.4 (0.8, 2.5)1.6 (0.8, 2.9)
Age (years):
⩽641111
 65–741.2 (0.4, 3.5)1.2 (0.4, 3.8)2.1 (0.9, 4.5)1.6 (0.7, 3.7)
 75–841.5 (0.6, 4.2)1.4 (0.5, 4.3)2.8 (1.4, 5.6)2.4 (1.1, 5.2)
 85–941 (0.3, 2.9)0.8 (0.2, 2.7)3.1 (1.0, 9.1)4.1 (1.2, 13.2)
No of previous hospital visits:
⩽31111
 4–100.8 (0.2, 2.5)0.9 (0.2, 3.4)0.5 (0.2, 1.2)0.4 (0.1, 1.2)
 11–400.9 (0.3, 3.3)1.2 (0.3, 4.8)0.4 (0.1, 0.9)0.2 (0.1, 0.7)
 >400.3 (0.1, 1.1)0.4 (0.1, 1.6)0.2 (0.1, 0.4)0.1 (0.0, 0.3)
Main diagnosis:
I1111
 II1.3 (0.6, 2.8)1.3 (0.6, 3.0)2.1 (1.1, 4.0)2.7 (1.4, 5.3)
 III10.2 (2.2, 47.9)8.2 (1.7, 39.9)7.9 (2.2, 28.3)8.3 (2.2, 31.4)
  • Adj ORs = adjusted for severity of visual impairment and main diagnosis.

  • I = permanent and no ongoing treatment; II = permanent but ongoing treatment; III = potentially reversible.