Table 2:

Total health/death- utility for all untreated diabetic retinopathy states with the utility assessment methods by sociodemographic factors

Variable	n	SG Utility		TTO Utility		VAT Utility
		Median (IQR)	P-value	Median (IQR)	P-value	Median (IQR)	P-value
All	150	0.95 (0.03)		0.85 (0.15)		0.80 (0.30)
Sex
Male	79	0.96 (0.15)	0.43	0.89 (0.28)	0.06	0.80 (0.25)	0.26
Female	71	0.94 (0.16)		0.80 (0.30)		0.75 (0.29)
Age (yr)
22–35	12	1.00 (0.05)	0.29	0.87 (0.12)	0.14	0.80 (0.14)	0.29
35–50	52	0.95 (0.10)		0.90 (0.30)		0.80 (0.23)
>50	86	0.93 (0.18)		0.80 (0.30)		0.73 (0.30)
Marital Status
Single	18	0.94 (0.10)	0.59	0.80 (0.20)	0.75	0.80 (0.20)	0.57
Married	121	0.95 (0.15)		0.85 (0.30)		0.80 (0.30)
Other	11	0.90 (0.24)		0.90 (0.13)		0.70 (0.35)
Occupation Status
Employed	56	0.96 (0.11)	0.18	0.90 (0.25)	0.23	0.80 (0.21)	0.06
Unemployed	25	0.96 (0.16)		0.80 (0.23)		0.75 (0.25)
House keeper	47	0.95 (0.12)		0.80 (0.30)		0.80 (0.23)
Others	22	0.90 (0.21)		0.85 (0.28)		0.65 (0.27)
Income
Low	31	0.95 (0.16)	0.91	0.80 (0.23)	0.21	0.72 (0.27)	0.33
Middle	107	0.95 (0.15)		0.90 (0.30)		0.80 (0.30)
High	12	0.93 (0.13)		0.85 (0.23)		0.73 (0.16)
Education Status*
Low Literacy	113	0.96 (0.14)	0.34	0.85 (0.30)	0.89	0.80 (0.28)	0.81
High School	26	0.93 (0.12)		0.88 (0.23)		0.78 (0.18)
University	11	0.90 (0.27)		0.85 (0.20)		0.75 (0.25)
Living Place
Urban	138	0.95 (0.15)	0.70	0.85 (0.30)	1.00	0.80 (0.29)	1.00
Rural	12	0.92 (0.26)		0.85 (0.17)		0.80 (0.31)

^*:for these variables, we used the mean and SD in above tables.

IQR = interquartile range; SG= standard gamble; TTO = time trade off; VAT = visual analogue thermometer