Table 2.

Cox regression: Age of First Cannabis Use to Age of First Regular Use, Daily Use, and CUD Symptom

	Estimate	Standard Error	Hazard ratio	95% Confidence Interval
Years to regular Use (n=518)
Sex	0.67	0.19	1.95***	1.35–2.82
Birth year	0.02	0.03	1.02	0.97–1.08
Potency	−0.004	0.05	1.00	0.90–1.11
Years to Daily Use (n=517)
Sex	0.65	0.22	1.92**	1.24–2.97
Birth year	0.07	0.03	1.07*	1.01–1.13
Potency	−0.09	0.06	0.91	0.81–1.03
Years to first CUD symptom (n=480), accounting for regular use
Sex	0.13	0.17	1.15	0.82–1.59
Birth year	−0.04	0.03	0.91	0.91–1.02
Regular user	1.41	0.17	4.11***	2.96–5.72
Potency	0.34	0.07	1.41***	1.24–1.60
Potency x Years to 1st CUD symptom	−0.14	0.02	0.87***	0.84–0.90
Years to first CUD symptom (n=480), accounting for daily use
Sex	0.21	0.16	1.24	0.90–1.71
Birth year	−0.04	0.03	0.96	0.91–1.02
Daily user	1.14	0.16	3.14***	2.31–4.26
Potency	0.30	0.06	1.36***	1.20–1.54
Potency x Years to 1st CUD symptom	−0.13	0.02	0.88***	0.84–0.91

Note. CUD=Cannabis Use Disorder. Missing values were due to reprting discrepancies regarding age of first cannabis use and age of first CUD symptom, regular use, or daily use, where negative values were treated as missing. Less than 10% of the sample was treated as missing in any given model.

^*p<.05,

^***p<.001.