Health-related quality of life in the Brazilian Amazon: a population-based cross-sectional study

Silva, Marcus Tolentino; Caicedo Roa, Monica; Galvao, Tais Freire

doi:10.1186/s12955-017-0734-5

Table 2 Adjusted impact of study variables on utility scores by Tobit regression models of total sample, the capital and and inner cities

Variables	Total (n = 4001)		Manaus (n = 3479)		Inner cities (n = 522)
	Coefficient	p value	Coefficient	p value	Coefficient	p value
Sex
Female	Ref.^a		Ref.		Ref.
Male	0.041	<0.001	0.038	<0.001	0.057	0.026
Age group (years)
18–24	Ref.		Ref.		Ref.
25–34	−0.002	0.849	−0.005	0.692	0.006	0.858
35–44	−0.004	0.787	0.001	0.972	−0.028	0.461
45–59	−0.028	0.053	−0.026	0.089	−0.054	0.164
60+	−0.022	0.270	−0.019	0.373	−0.072	0.187
Marital status
Single	Ref.		Ref.		Ref.
Separated/Divorced	−0.052	0.001	−0.046	0.008	−0.065	0.145
Widowed	0.012	0.614	0.015	0.578	0.023	0.748
Married	−0.006	0.485	−0.003	0.743	−0.008	0.752
Pregnancy (last 12 months)
No	Ref.		Ref.		Ref.
Yes	−0.005	0.789	−0.021	0.287	0.120	0.065
Ethnicity
White	Ref.		Ref.		Ref.
Black	0.036	0.066	0.014	0.516	0.148	0.005
Asian	0.006	0.791	0.013	0.589	−0.060	0.431
Brown	−0.019	0.095	−0.015	0.211	−0.029	0.329
Indigenous	−0.041	0.280	−0.057	0.160	0.011	0.900
Educational level
Higher education or above	Ref.		Ref.		Ref.
High school	0.029	0.181	0.023	0.329	0.043	0.423
Middle school	0.042	0.077	0.038	0.146	0.052	0.376
Elementary school or less	0.028	0.217	0.017	0.497	0.076	0.173
Work status
Formal	Ref.		Ref.		Ref.
Informal	−0.019	0.114	−0.019	0.134	−0.006	0.843
Retired	−0.042	0.056	−0.050	0.036	0.025	0.672
Unemployed	0.023	0.081	0.020	0.152	0.076	0.041
Does not work	0.031	0.037	0.029	0.067	0.069	0.100
Social class^b
A/B1	Ref.		Ref.		Ref.
B2	−0.016	0.567	−0.010	0.732	−0.053	0.622
C1	−0.053	0.050	−0.043	0.133	−0.108	0.284
C2	−0.081	0.002	−0.078	0.005	−0.072	0.471
D/E	−0.118	<0.001	−0.103	<0.001	−0.204	0.041
Health perception
Very good	Ref.		Ref.		Ref.
Good	0.016	0.233	0.001	0.922	0.095	0.008
Fair	−0.115	<0.001	−0.133	<0.001	0.012	0.765
Bad	−0.242	<0.001	−0.252	<0.001	−0.169	0.005
Very bad	−0.369	<0.001	−0.379	<0.001	−0.299	<0.001

^aRef., reference
^bSocial class according to the Brazilian criteria of economic classification [23]

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