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Table 1 Demographic and clinical characteristics of the participants (n = 510)

From: Psychometric properties of the World Health Organization quality of life assessment – brief in methadone patients: a validation study in northern Taiwan

Characteristics

Mean (S.D.)

Age groups (year)

40.7 (9.1)

Duration of heroin use (years)

11.96 (7.78)

Average MMT dose (mg/day)

51.62 (32.40)

Duration in MMT (days)

183.86 (150.90)

 

Number (%)

Gender

 

 Male

443 (86.9)

 Female

67 (13.1)

Education

 

 Less than 9 years

133 (26.1)

 At least 9 years

371 (72.7)

 Missing replies

6 (1.2)

HCV

 

 Negative

31 (6.1)

 Positive

435 (85.3)

 Missing replies

44 (8.6)

HIV

 

 Negative

429 (84.1)

 Positive

61 (12.0)

 Missing replies

20 (3.9)

  1. SD: standard deviation; HCV: hepatitis C virus; HIV: human immunodeficiency virus.