Prevalence of Keratoconus in a Population-Based Study in Syria

Table 4

Results of the univariate analysis (n = 839).

Predictor		Non-Kc	Kc	Prevalence of Kc (%)	OR	95% CI for β		value
						Lower bound	Upper bound
Age	17 to 24 (reference)	454	7	1.51	1	—	—	—
	25 to 32	263	4	1.49	0.98	0.28	3.40	0.983
	33 to 40	102	1	0.97	0.63	0.07	5.22	0.674
	41 and above	8	0	0	1	—	—	—
Sex	Female (reference)	502	8	1.56	1	0.23	2.58	0.675
	Male	325	4	1.21	0.77
Governorate	Tishreen (reference)	694	9	1.28	1	0.95	3.57	0.067
	Damascus	133	3	2.20	1.85
Family history	No	827	10	1.19	1	—	—	—
	Yes	0	2	100	1
Parents relationship	No	747	10	1.32	1	0.40	8.67	0.425
	Yes	80	2	2.43	1.86
Eye rubbing	No	747	6	0.79	1	2.94	29.63	<0.001
	Yes	80	6	6.97	9.33

Kc = keratoconus; OR = odds ratio; CI = confidence interval; β = beta coefficients; statistically significant values (). Values in bold are statistically significant.