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Table 1 Characteristics of Patients Authorized Medical Cannabis Patients and Screened Using the PHQ-9 Questionnaire (n = 37,338)

From: Changes in patient health questionnaire (PHQ-9) scores in adults with medical authorization for cannabis

Characteristic

All Patients with PHQ-9 Scores (N = 37,338)

Patients with PHQ-9 Follow-up (N = 5103)

Patients without PHQ-9 Follow-up (N = 32,235)

N (%)

Age (years)

  < 21

210 (0.6)

21 (0.4)

189 (0.6)

 21–30

2504 (6.7)

277 (5.4)

2227 (6.9)

 31–40

5641 (15.1)

847 (16.6)

4794 (14.9)

 41–50

6637 (17.8)

990 (19.4)

5647 (17.5)

 51–60

9143 (24.5)

1342 (26.3)

7801 (24.2)

 61–70

7389 (19.8)

996 (19.5)

6393 (19.8)

 71–80

3956 (10.6)

437 (8.6)

3519 (10.9)

 81–90

1637 (4.4)

172 (3.4)

1465 (4.5)

  > 90

221 (0.6)

21 (0.4)

200 (0.6)

Sex

 Female

20,144 (53.9)

2811 (55.1)

17,333 (53.8)

 Male

17,193 (46.1)

2292 (44.9)

14,901 (46.2)

 Other

1 (0.0)

1 (0.0)

Neighbourhood Income Quintile

 1

7168 (19.2)

1044 (20.5)

6124 (19.0)

 2

7781 (20.8)

913 (17.9)

6868 (21.3)

 3

7912 (21.3)

1017 (20.0)

6895 (21.5)

 4

8613 (23.1)

1270 (24.9)

7343 (22.8)

 5

5673 (15.2)

832 (16.3)

4841 (15.0)

PHQ-9 Score, Mean (SD)

10.45(6.88)

10.48(6.83)

10.44(6.88)

Depression Category

 None

8777 (23.5)

1181 (23.1)

7596 (23.6)

 Mild

9769 (26.2)

1372 (26.9)

8397 (26.1)

 Moderate

8005 (21.4)

1069 (21.0)

6936 (21.5)

 Moderately Severe

6106 (16.4)

833 (16.3)

5273 (16.4)

 Severe

4681 (12.5)

648 (12.7)

4033 (12.5)

Reason for Cannabis Use

 Pain

29,537(79.1)

4230 (82.9)

25,307 (78.5)

 Mental Health

14,884 (39.9)

1955 (38.3)

12,929 (40.1)

  Anxiety

9315 (25.0)

1242 (24.3)

8073 (25.0)

  Depression

6100 (16.3)

785 (15.4)

5315 (16.5)

  Post-traumatic Stress Disorder

1478 (4.0)

181 (3.6)

1297 (4.0)

  Bipolar

773 (2.1)

82 (1.6)

691 (2.1)

  Panic Disorder

1340 (4.0)

160 (3.1)

1180 (3.7)

  Mood Disorder

1448 (3.9)

171 (3.4)

1277 (4.0)

 Autoimmune

8481 (22.7)

1281 (25.1)

7200 (22.3)

 Cancer

3860 (10.3)

416 (8.1)

3444 (10.7)

 Sleep problems

9064 (24.3)

1174 (23.0)

7890 (24.5)

 Neurological

3005 (8.1)

403 (7.9)

2602 (8.1)

 Gastrointestinal

1774 (4.8)

283 (5.6)

1491 (4.6)

 Other

6268 (16.8)

859 (16.8)

5409 (16.8)

 Uncategorized

2450 (6.6)

227 (4.5)

2223 (6.9)

Method of Cannabis Use

 Ingesting

22,021 (59.0)

4016 (78.7)

18,005 (55.9)

 Smoking

12,719 (34.1)

2491 (48.8)

10,228 (31.7)

 Vaping

13,745 (36.8)

2771 (54.3)

10,994 (34.1)

 Topical

324 (0.9)

41 (0.8)

283 (0.9)

Antidepressant Usage

17,491 (46.8)

2656 (52.0)

14,835 (46.0)

 SSRI

7647 (20.5)

1100 (21.6)

6547 (20.3)

 SNRI

8056 (21.6)

1279 (25.1)

6777 (21.0)

 TCA

3621 (9.7)

602 (12.1)

3019 (9.4)

 Other

2974 (8.0)

463 (9.1)

2511 (7.8)

  1. SSRI selective serotonin reuptake inhibitor, SNRI serotonin-norepinephrine reuptake inhibitor, TCA tricyclic antidepressants