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Table 1 Socio-demographic, substance, and psychiatric characteristics in heroin users

From: Sleep disturbance and its associations with severity of dependence, depression and quality of life among heroin-dependent patients: a cross-sectional descriptive study

Continuous variables

Numbera

Mean (SD)

Age (years)

514

36.3 (7.5)

Education (years)

514

9.9 (2.0)

Life events

514

1.8 (2.2)

Family APGAR score

514

5.8 (4.3)

Criminal convictions (substance)

514

2.4 (1.7)

Criminal convictions (nonsubstance)

514

1.4 (1.6)

Onset age of heroin use (years)

514

25.6 (6.7)

Length of heroin use (years)

514

10.7 (5.8)

Dose of heroin (half qian/day)b

514

6.5 (6.5)

SDS

514

7.0 (2.7)

CAGE

514

1.4 (1.4)

Cigarette consumption

514

1.2 (0.5)

CES-D

514

21.5 (9.7)

QOL-physical health

514

12.8 (2.1)

QOL-psychological

514

12.1 (2.4)

QOL-social relations

514

12.2 (2.4)

QOL-environment

514

12.1 (2.2)

Global PSQI

514

9.1 (4.3)

Categorical Variables

N

%

Sex

 Male

462

89.9

 Female

52

10.1

Marital status

 Single

251

48.8

 Married

112

21.8

 Divorced, separated, or widowed

151

29.4

Employment

Yes

302

58.8

No

212

41.2

Injection drug use

Yes

387

75.3

No

127

24.7

Needle sharing

Yes

44

8.6

No

470

91.4

Sleep disturbance

Yes (PSQI > 5)

392

76.3

No (PSQ5)

122

23.7

  1. LTE List of Threatening Experiences; APGAR adaptation, partnership, growth, affection, resolve score; SDS Severity of Dependence Scale; CES-D The center of epidemiological study depression; PSQI Pittsburgh Sleep Quality Index; QOL The World Health Organization Quality of Life-BREF
  2. aNumber of total recruited patients = 598, number of missing data = 84. Total 514 participants were analyzed
  3. bHalf Qian = 1.875 g (number of half Qians of heroin used per day)