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Table 1 Baseline demographics

From: Clinical and cost-effectiveness of contingency management for cannabis use in early psychosis: the CIRCLE randomised clinical trial

Characteristic

Control

Contingency Management (CM)

n/N or median or utility score

%, SD, or IQR

n/N or median or utility score

%, SD, or IQR

Male

240/273

88

238/278

86

Age mean (SD)

25

(4)

24

(4)

Ethnicity

 White

144/273

53

148/277

53

 Black

62/273

23

65/277

23

 Asian

30/273

11

29/277

10

 Other

37/273

14

35/277

13

Marital status

 Single

253/273

93

259/278

93

 Married or cohabiting

14/273

5

17/278

6

 Other

6/273

2

2/278

1

Educational attainment

 No qualifications

48/273

18

43/277

16

 GCSE or equivalent

104/273

38

133/277

48

 A level or equivalent

67/273

25

58/277

21

 Post 18 education (including HND, trade, degree)

54/273

20

43/277

16

 Ever had open market employment

223/273

82

240/278

86

 Any current work or study

67/273

25

73/278

26

Diagnosis

 Schizophrenia or schizo-affective disorder

80/256

31

90/268

34

 Bipolar affective disorder

26/256

10

19/268

7

 Depression with psychotic symptoms

11/256

4

5/268

2

 Other psychosis

139/256

54

154/268

57

Cannabis use

 1–3 times a week

77/273

28

78/278

28

 More than 3 times a week

196/273

72

200/278

72

 Any work or study

58/183

32

58/189

31

 Cannabis-positive urine

210/262

80

214/272

79

 Number of days using cannabis*

108

(67, 156)

114

(70, 162)

 History of cannabis dependence

238/273

87

236/278

85

 Current cannabis dependence

183/238

77

185/236

78

 PANSS positive symptoms median (IQR)

12

(9, 17)

13

(9, 16)

 PANSS negative symptoms median (IQR)

14

(11, 19)

14

(10, 19)

EQ-5D-3L utility score

0.7619

 

0.7652

 

SF-6D utility score

0.6789

 

0.6833

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