Table 1

Comparison of epidemiological characteristics of the psychiatric patients with positive HBV markers and the psychiatric patients with negative HBV markers.

Epidemiological Characteristics
Patients with positive markers N = 12 (%)
Patients with negative markers n = 87 (%)c
ORa
95% ECIb

Age
     less than 45 years
5 (41.7%)
58 (71.6%)


     45 years and older
7 (58.3%)
23 (28.4%)
4.27
1.02–18.78





Gender
     Female
3 (25.0%)
27 (31.0%)


     Male
9 (75.0%)
60 (69.0%)
1.35
0.30–8.33





Number of hospitalizations
     One
11 (91.7%)
71 (87.7%)


     More than one
1 (8.3%)
10 (12.3%)
0.65
0.01–5.45





Duration of last hospitalization
     Equal or less than 5 years
5 (41.7%)
46 (56.8%)


     More than 5 years
7 (58.3%)
35 (43.2%)
1.84
0.46–7.96





History of blood transfusion
0 (0.0%)
3 (3.4%)
0
0.00–18.39





History of drug use
2 (16.7%)
9 (10.3%)
1.73
0.16–10.25

aOR: Odds ratio.

bECI: Exact confidence interval.

cSome data were available in only 81 subjects.

Alvarado Esquivel et al. Clinical Practice and Epidemiology in Mental Health 2005 1:10   doi:10.1186/1745-0179-1-10