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. Author manuscript; available in PMC: 2020 Nov 1.
Published in final edited form as: Epilepsia. 2019 Oct 6;60(11):2286–2293. doi: 10.1111/epi.16352

TABLE 2.

Sample characteristics and demographic predictors of IES score

N % High IES PR (95% CI) P
Total 165 50.3
Age
 <40 y 44 47.7 0.8 (0.57–1.15) .24
 40–59 y 70 45.7 0.8 (0.55–1.09) .15
 60+ y 51 58.8 1.0 (ref) (ref)
Sex
 Women 104 51.0 1.0 (0.76–1.42) .82
 Men 61 49.2 1.0 (ref) (ref)
Education
 College graduate 88 51.1 1.0 (0.76–1.37) .88
 < College graduate 76 50.0 1.0 (ref) (ref)
Employment
 Unemployed 47 63.8 1.4 (1.06–1.84) .02
 Employed/retired 116 45.7 1.0 (ref) (ref)
Total number of relatives with epilepsy
 4 or more 77 48.8 1.1 (0.80–1.41) .66
 <4 80 52.0 1.0 (ref) (ref)
Total number of lifetime seizures
 >100 33 81.8 2.4 (1.70–3.29) <.001
 21–100 32 56.3 1.6 (1.02–2.59) .04
 20 75 34.7 1.0 (ref) (ref)
Time since last seizure
 ≤5 y 81 71.6 2.3 (1.54–3.41) <.001
 >5 y 64 31.3 1.0 (ref) (ref)

Note: Total numbers vary based on missing data.

Abbreviations: CI, confidence interval; IES, Impact of Epilepsy Scale; PR, prevalence ratio, generated from bivariate Poisson regression models with robust standard errors; ref, referent.