Causes and Risk Factors of Repeated Hospitalization among Patients with Diabetic Retinopathy

Table 2

Comparison of characteristics in patients with different times of hospitalizations.

Variables	Times of hospitalizations			value
	2-3	4-5	>5
Age, years, median (IQR)	57 (51-64)	53 (48-60)	52 (44-57)	<0.001^a
Gender, (%)				0.088^b
Male
Female
Residence, (%)				0.003^b
Inside the city
Outside the city
Payment type, (%)				0.003^b
Self-pay
Medical insurance
Marital status, (%)				0.002^c
Single
Married
Divorced/widowed

^aKruskal-Wallis rank sum test; ^bchi-square test; ^cFisher’s exact test.