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Table 4 Description of cannabis products used for self-treatment and mode of administration, stratified according to the type of cannabis use among individuals who reported self-medication with cannabis in an online survey in Quebec from November 2020 to January 2021 (n = 489)

From: A description of self-medication with cannabis among adults with legal access to cannabis in Quebec, Canada

  Gender (16 participants with “other gender” not stratified) Age (years) Type of cannabis use Total
Men Women p-value$ ≤ 34 >34 p-value$ Medical use only Recreational + medical use p-value$
THC and CBD ratio n = 231 n= 229 0.0150 n = 245 n = 230 0.9979 n = 120 n = 356 <0.0001 n = 476
 Equal THC and CBD 50 (21.65) 36 (15.72)   46 (18.78) 43 (18.70)   16 (13.33) 73 (20.51) 89 (18.70)
 CBD > THC 39 (16.88) 56 (24.45)   49 (20.00) 47 (20.43)   33 (27.50) 63 (17.70) 96 (20.17)
 THC > CBD 85 (36.80) 75 (32.75)   86 (35.10) 83 (36.09)   33 (27.50) 136 (38.20) 169 (35.50)
 Only CBD 21 (9.09) 37 (16.16)   31 (12.65) 28 (12.17)   27 (22.50) 32 (8.99) 59 (12.39)
 Only THC 36 (15.58) 25 (10.92)   33 (13.47) 29 (12.61)   11 (9.17) 52 (14.61) 63 (13.24)
CBD concentration n = 217 n = 216 0.5007 n = 229 n = 219 0.0028 n = 110 n = 338 < 0.0001 n = 448
 <1% 40 (18.43) 31 (14.35)   41 (17.90) 33 (15.07)   12 (10.91) 62 (18.34)   74 (16.52)
 1–10% 82 (37.79) 78 (36.11)   95 (41.48) 73 (33.33)   30 17.86) 138 (40.83)   168 (37.50)
 > 10–20% 61 (28.11) 64 (29.63)   68 (29.69) 60 (27.40)   28 (25.45) 100 (29.59)   128 (28.57)
 >20% 34 (15.67) 43 (19.91)   25 (10.92) 53 (24.20)   40 (36.36) 38 (11.24)   78 (17.41)
THC concentration n = 228 n = 226 <.0001 n = 243 n = 226 0.0764 n = 115 n = 355 <0.0001 n = 470
 <1% 23 (10.09) 43 (19.03)   32 (13.17) 35 (15.49)   33 (28.70) 34 (9.58)   67 (14.26)
 1–10% 37 (16.23) 60 (26.55)   55 (22.63) 46 (20.35)   29 (25.22) 72 (20.28)   101 (21.49)
 >10–20% 73 (32.02) 71 (31.42)   89 (36.63) 62 (27.43)   18 (15.65) 133 (37.46)   151 (32.13)
  >20% 95 (41.67) 52 (23.01)   67 (27.57) 83 (36.73)   35 (30.43) 116 (32.68)   151 (32.13)
Cannabis strain n = 214 n = 196 0.3395 n = 222 n = 203 0.6900 n = 88 n = 338 0.8550 n = 426
 Sativa 47 (21.96) 50 (25.51)   48 (21.62) 51 (25.12)   21 (23.86) 79 (23.37)   100 (23.47)
 Indica 63 (29.44) 60 (30.61)   70 (31.53) 56 (27.59)   29 (32.95) 97 (28.70)   126 (29.58)
 Hybrid 49 (22.90) 50 (25.51)   52 (23.42) 52 (25.62)   20 (22.73) 84 (24.85)   104 (24.41)
 Mixed cannabis 55 (25.70) 36 (18.37)   52 (23.42) 44 (21.67)   18 (20.45) 78 (23.08)   96 (22.54)
Route of administration (n = 489)a     n = 252 n = 236   N = 122 N = 367   n = 489
 Smoking 193 (82.13) 188 (78.89) 0.3889 217 (86.11) 179 (75.85) 0.0038 76 (62.30) 321 (87.47) <.0001 397 (81.19)
 Vaping 52 (22.13) 34 (14.29) 0.0270 48 (19.05) 38 (16.10) 0.3934 17 (13.93) 70 (19.07) 0.1985 87 (17.79)
 Vaporizingb 67 (28.51) 63 (26.47) 0.6193 71 (28.17) 63 (26.69) 0.7144 40 (32.79) 95 (25.89) 0.1396 135 (27.61)
 Oral administration 115 (48.94) 114 (47.90) 0.8215 123 (48.81) 112 (47.46) 0.7652 60 (49.18) 176 (47.96) 0.8147 236 (48.26)
Frequency of use n = 220 n = 220 0.0539 n = 237 n = 217 0.4489 N = 114 N = 341 0.0068 n = 455
 < 1 day/month 8 (3.64) 18 (8.18)   15 (6.33) 11 (5.07)   13 (11.40) 13 (3.81)   26 (5.71)
 1 day/month 6 (2.73) 13 (5.91)   14 (5.91) 5 (2.30)   3 (2.63) 16 (4.69)   19 (4.18)
 2–3 days/month 22 (10.00) 31 (14.09)   26 (10.97) 28 (12.90)   18 (15.79) 36 (10.56)   54 (11.87)
 1–2 days/week 21 (9.55) 23 (10.45)   24 (10.13) 21 (9.68)   13 (11.40) 33 (9.68)   46 (10.11)
 3–4 days/week 34 (15.45) 23 (10.45)   32 (13.50) 25 (11.52)   18 (15.79) 39 (11.44)   57 (12.53)
 5–6 days/week 19 (8.64) 22 (10.00)   20 (8.44) 25 (11.52)   7 (6.14) 38 (11.14)   45 (9.89)
 Daily 110 (50.00) 90 (40.91)   106 (44.73) 102 (47.00)   42 (36.84) 166 (48.68)   208 (45.71)
Duration of use for medical purpose n = 235 n = 238 0.1264 n = 252 n = 236 0.2320 N = 122 N = 367 < 0.0001 n = 489
 < 1 month 4 (1.70) 8 (3.36)   8 (3.17) 4 (1.69)   6 (4.92) 6 (1.63)   12 (2.45)
 1 to 6 months 15 (6.38) 25 (10.50)   19 (7.54) 23 (9.75)   15 (12.30) 27 (7.36)   42 (8.59)
 6–12 months 31 (13.19) 42 (17.65)   46 (18.25) 28 (11.86)   25 (20.49) 49 (13.35)   74 (15.13)
 1 to 2 years 45 (19.15) 44 (18.49)   45 (17.86) 46 (19.49)   32 (26.23) 59 (16.08)   91 (18.61)
 > 2 years 140 (59.68) 119 (50.00)   134 (53.17) 135 (57.20)   44 (36.07) 226 (61.58)   270 (55.21)
  1. Comparisons between groups were made using chi-square tests and p-value calculated. A p-value <0.05 was considered as statistically significant
  2. THC Tetrahydrocannabinol, CBD Cannabidiol
  3. $See supplemental Table 1 for pairwise comparisons for categorical variables with a significant global p-value
  4. aAs routes of administration were not mutually exclusive, a global p-value was not computed (the comparisons were made for each single route of administration)
  5. bVaporizing consists to heat dry cannabis to release active ingredients as opposed to vaping that uses liquid preparation