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Table 1 Sample description using the long dataset (one record per patient for each year being in treatment)

From: Ethnic- and gender-specific differences in the prevalence of HIV among patients in opioid maintenance treatment—a case register analysis

 

Group size according to first subject record

Number of records (mean)

Age in years (mean; using all records)

Complete dataset

Imputed dataset

Complete dataset

Imputed dataset

Complete dataset

Imputed dataset

Female, non-Swiss, non-injector

185

215.3

5.07

4.95

31.9

32.0

Female, non-Swiss, ever injector

188

225.5

5.71

5.20

34.2

33.9

Female, Swiss, non-injector

1,105

1,298.4

7.60

7.33

33.2

33.2

Female, Swiss, ever injector

1,505

1,738.2

7.26

6.81

34.0

33.9

Male, non-Swiss, non-injector

941

1,124.5

6.14

5.86

33.2

33.2

Male, non-Swiss, ever injector

830

984.9

5.25

4.96

34.8

34.7

Male, Swiss, non-injector

2,245

2,643.0

7.98

7.70

34.2

34.0

Male, Swiss, ever injector

2,733

3,192.2

7.30

6.94

36.0

35.9