Table 1 Patient characteristics and number of acupuncture or relaxation sessions attended

Female gender, %

37.5

41.3

50.0

43.9

0.185

Age, M(SD)

44.1(14.0)

44.3(14.2)

44.8(13.0)

44.5(13.6)

0.924

 Visits to the doctor

1.5(1.7)

2.1(2.0)

1.8(2.0)

1.8(1.9)

0.062

 Inpatient admissions

0.7(0.8)

0.9(1.1)

0.7(0.7)

0.7(0.9)

0.406

 Inpatient days

2.6(4.6)

3.8(7.8)

3.3(7.3)

3.2(6.8)

0.705

Inpatient at treatment start, %

35.0

45.0

35.8

38.2

0.333

Main diagnosis, %

n = 73

n = 80

n = 108

n = 261

 Mental and behavioral disorders due to:

 use of alcohol, F10.1-10.3

52.1

48.8

60.2

54.4

–

 use of opioids, cannabinoids, sedatives or hypnotics, F11.1–13.2

23.3

17.5

17.6

19.2

0.649

 multiple drug use, F19.1–19.2

15.1

18.8

10.2

14.2

–

 Other psychiatric diagnosis, F29.2–90.0

8.2

12.5

11.1

10.7

–

 General psychiatric examination, Z00.4

1.4

2.5

0.9

1.5

–

n = 75

n = 74

n = 113

n = 262

BAI sum score at T1, M(SD)

21.7(12.5)

19.9(10.8)

21.6(11.9)

21.1(11.8)

0.557

n = 75

n = 74

n = 112

n = 261

ISI sum score at T1, M(SD)

15.4(7.2)

13.9(7.3)

14.4(6.9)

14.6(7.1)

0.390

n = 72

n = 72

n = 109

n = 253

AUDIT at T1, M(SD)

17.3(12.3)

18.6(11.9)

19.0(12.0)

18.4(12.0)

0.637

n = 74

n = 71

n = 112

n = 257

DUDIT at T1, M(SD)

10.5(14.5)

10.1(13.8)

9.0(13.2)

9.7(13.7)

0.730

n = 68

n = 67

n = 100

n = 235

Number of sessions, M(SD)

11.9(4.7)

7.1(3.4)

6.9(3.9)

8.4(4.6)

<0.001