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Table 1 Paired variables among cases and controls

From: COPD Assessment Test (CAT) score as a predictor of major depression among subjects with chronic obstructive pulmonary disease and mild hypoxemia: a case–control study

 

All subjects

Cases

Control group

 
 

n = 60

n = 30

n = 30

p

Age, years

69.7 ± 9.0

68.8 ± 10.2

70.5 ± 7.8

0.46

Education (years)

4 (5)

4 (1)

4 (12)

0.80

Socioeconomic score

17 (9)

16 (6)

19 (9)

0.07

  1. Data are presented as mean ± SD, n (%) or median (interquartile range). The Socioeconomic score was assessed by the questionnaire of the Brazilian Association of Research Companies (range 0–40).