Statistical Analysis on Time to Blindness of Glaucoma Patients at Jimma University Specialized Hospital: Application of Accelerated Failure Time Model

Table 2

Clinical variables of glaucoma patients’ at Jimma University Specialized Hospital from 2016 to 2020 (n = 321).

Covariates	Category	Number of censored	Percentage of censored	Number of events	Percentage of event	Log-rank test
						Chq	value
Duration of diagnosis	Short (<1 year)	26	8.10	97	30.21	11.0	0.001
	Medium (1–5 years)	20	6.23	80	24.92
	Long (≥6 years)	14	4.32	84	26.17
Type of medication	Timoglue	24	7.48	108	33.64	3.90	0.100
	Timolol	17	5.29	75	23.36
	Diamox	19	5.91	78	24.29
Stage of glaucoma	Early	11	3.43	21	6.540	13.2	0.004
	Moderate	20	6.23	132	41.12
	Advanced	29	9.03	43	13.39
	Absolute	0	-	65	20.25
Cup-disk ratio	≤0.7	34	10.59	94	29.28	2.30	0.100
		26	8.11	167	52.11
IOP	Normal	21	6.54	146	45.48	0.60	0.012
	Not normal	39	12.15	115	35.83
Diabetics	No	42	13.11	167	52.02	1.90	0.200
	Yes	18	5.61	94	29.28

Source: Jimma University Specialized Hospitals, Ethiopia; from January 1, 2016, to August 30, 2020.