N | Total sample | A. uninformed consumers n = 703 | B. accurate estimators n = 427 | B vs A (ref) OR (95 % CI) | |
---|---|---|---|---|---|
Demographics and other drug use | |||||
Age (M, SD) | 1130 | 24.4 (6.7) | 25.0 (7.4) | 23.5 (5.2) | 1.49 (1.20–1.86), p < .001 |
% Male | 1124 | 58 (55–61) | 61 (57–65) | 53 (48–58) | 0.73 (0.57–0.93), p = .011 |
% Employed | 1129 | 60 (57–63) | 62 (58–65) | 57 (53–62) | 0.84 (0.66–1.07), p = .152 |
% Completed tertiary qualification | 1123 | 48 (45–50) | 49 (45–52) | 46 (41–50) | 0.89 (0.70–1.13), p = .342 |
% Currently studying tertiary qualification | 1130 | 79 (77–81) | 78 (75–81) | 80 (76–84) | 1.13 (0.84–1.52), p = .434 |
Daily caffeine intake (excluding ED; M, SD) | 1136 | 205.5 (190.8) | 162.5 (183.1) | 200.5 (199.5) | 1.06 (0.85–1.32), p = .582 |
Independent ED Use (past year) | 1105 | 95 (93–96) | 94 (92–96) | 95 (93–97) | 1.29 (0.74–2.26), p = .367 |
n = 1046 | n = 648 | n = 398 | |||
Amongst consumers: | |||||
% ED use every two weeks + | 1046 | 36 (33–39) | 33 (29–36) | 46 (41–51) | 1.73 (1.34–2.24), p < .001 |
Typical ED intake (M, SD) | 976 | 1.5 (1.0) | 1.4 (1.1) | 1.6 (1.1) | 1.47 (1.16–2.10), p = .001 |
% Typical intake exceeds ED guidelines | 976 | 8 (6–10) | 6 (5–8) | 11 (8–15) | 1.89 (1.19–3.01), p = .007 |
% Monthly + exceed ED guideline use | 1041 | 13 (11–15) | 10 (7–12) | 19 (15–23) | 2.23 (1.55–3.20), p < .001 |
Maximum ED intake (M, SD) | 995 | 2.5 (2.2) | 2.3 (2.0) | 2.9 (2.3) | 1.67 (1.32–2.10), p < .001 |
% Maximum intake exceeds ED guidelines | 995 | 33 (30–36) | 27 (23–30) | 43 (38–48) | 2.06 (1.57–2.70), p < .001 |
AmED Use (past year) | 1130 | 64 (62–67) | 61 (58–65) | 69 (65–74) | 1.43 (1.10–1.84), p = .006 |
n = 727 | n = 431 | n = 296 | |||
Amongst consumers: | |||||
% AmED use every 2 weeks + | 722 | 19 (16–22) | 15 (12–19) | 25 (20–30) | 1.78 (1.22–2.58), p = .002 |
Typical ED intake (M, SD) | 713 | 3.0 (2.6) | 3.1 (2.8) | 3.0 (2.1) | 1.05 (0.80–1.38), p = .721 |
% Typical ED intake exceeds guideline | 713 | 42 (38–46) | 41 (36–45) | 44 (39–50) | 1.16 (0.86–1.57), p = .336 |
Typical alcohol intake (M, SD) | 719 | 5.9 (4.1) | 5.5 (3.9) | 6.5 (4.4) | 1.52 (1.16–1.99), p = .002 |
% Typical alcohol intake exceeds guideline | 719 | 54 (51–58) | 51 (46–55) | 59 (53–65) | 1.41 (1.04–1.90), p = .026 |
Maximum ED intake (M, SD) | 710 | 3.8 (3.0) | 3.7 (3.0) | 4.0 (2.9) | 1.21 (0.92–1.59), p = .172 |
% Maximum ED intake exceeds guideline | 710 | 57 (53–60) | 55 (50–60) | 60 (54–65) | 1.21 (0.90–1.64), p = .211 |
Maximum alcohol intake (M, SD) | 712 | 8.3 (6.7) | 7.7 (6.7) | 9.0 (6.6) | 3.71 (0.9–15.02), p = .066 |
% Maximum alcohol intake exceeds guideline | 712 | 64 (60–67) | 59 (54–64) | 71 (65–76) | 1.69 (1.23–2.33), p = .001 |