Prevalence of Keratoconus in a Population-Based Study in Syria

Table 1

Summary statistics of categorical variables.

Variable		Count (N = 839)	Valid percent
Age	17–24	461	54.94
	25–32	267	31.82
	33–40	103	12.27
	41 and above	8	0.95
Sex	Female	510	60.78
	Male	329	39.21
University	Tishreen	703	83.79
	Damascus	136	16.20
Family history	No	837	99.76
	Yes	2	0.23
Parents relationship	No	757	90.22
	Yes	82	9.77
Eye rubbing	No	753	89.74
	Yes	86	10.25
Patient outcome	Normal	788	93.92
	Suspect	39	4.64
	Keratoconus	12	1.43
		Count (N = 1678)	Valid percent
Astigmatic	No	525	31.29
	Yes	1153	68.71
Myopic	No	381	22.71
	Yes	1297	77.29
Hyperopic	No	1493	88.97
	Yes	185	11.03
Emmetropic	No	1523	90.76
	Yes	155	9.24