Table 1 Multiple variable adjusted regression results pertaining to the association between the percentage of GOS 3 claims out of the total population as the independent variable and SIMD, age and refractive category.

From: Socio-economic differences in accessing NHS spectacles amongst children with differing refractive errors living in Scotland

Variable

Coefficient

p

96% Confidence interval

SIMD

 1

 2

−0.56

0.02

−1.03 to −0.09

 3

−1.56

<0.001

−1.99 to −1.13

 4

−1.98

<0.001

−2.39 to −1.58

 5

−2.27

<0.001

−2.69 to −1.86

Refractive group

 Emmetropes/low hyperopes

 Myopes

−12.76

<0.001

13.57 to −11.95

 Moderate/high hyperopes

2.60

<0.001

1.74 to 3.47

Interaction between SIMD and refractive group

 Emmetropes/low hyperopes

 SIMD 2 and myopes

0.31

0.33

−0.32 to 0.95

 SIMD 2 and moderate/high hyperopes

0.10

0.76

−0.55 to 0.76

 SIMD 3 and myopes

0.90

0.004

0.29 to 1.51

 SIMD 3 and moderate/high hyperopes

−0.15

0.63

−0.77 to 0.46

 SIMD 4 and myopes

1.04

<0.001

0.46 to 1.63

 SIMD 4 and moderate/high hyperopes

−0.01

0.96

−0.60 to 0.57

 SIMD 5 and myopes

1.42

<0.001

0.85 to 1.99

 SIMD 5 and moderate/high hyperopes

0.23

0.44

−0.36 to 0.83

 Likelihood ratio test (SIMD × refractive group)

p = 0.041

Interaction between age and refractive group

 Emmetropes/low high hyperopes

 Age and myopes

1.13

<0.001

1.07 to 1.20

 Age and moderate/high hyperopes

−0.36

<0.001

−0.42 to −0.29

 Likelihood ratio test (age × refractive group)

p < 0.001

 Likelihood ratio test (age × refractive group × SIMD)

p < 0.001

  1. SIMD Scottish Index of Multiple Deprivation, CI Confidence Interval.
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