Table 2.
Active marijuana smoking and adjusted percent changes in anti-Müllerian hormone (AMH) levels, Sister Study
| Marijuana Smoking History | N | % | Age adjusted % change and 95%CI | Multivariable adjusted % change and 95% CI a,b | |
|---|---|---|---|---|---|
| Marijuana smoking status | |||||
| Never smoked | 320 | 37.6 | 0.0 (referent) | 0.0 (referent) | |
| Past | 525 | 61.6 | 6.0 (−19.7, 39.9) | 2.9 (−22.6, 36.8) | |
| Current | 7 | 0.8 | −68.9 (−93.0, 38.8) | −67.1 (−92.6, 47.3) | |
| Marijuana frequency | |||||
| Never smoked | 320 | 43.0 | 0.0 (referent) | 0.0 (referent) | |
| Less than about twice a month | 241 | 32.4 | 18.6 (−15.3, 66.1) | 9.2 (−22.6, 54.0) | |
| More than about twice a month | 183 | 24.6 | −12.9 (−39.6, 25.6) | −10.7 (−38.5, 29.7) | |
| Age started using marijuana | |||||
| Never smoked | 320 | 37.4 | 0.0 (referent) | 0.0 (referent) | |
| <15 years | 85 | 9.9 | 26.0 (−22.3, 104.4) | 26.1 (−23.9, 108.9) | |
| 15–19 years | 337 | 39.4 | 8.7 (−19.9, 47.6) | 5.4 (−23.0, 44.3) | |
| 20+ years | 113 | 13.2 | −20.1 (−48.0, 22.8) | −17.9 (−46.7, 26.4) | |
| Total years of marijuana use | |||||
| Never smoked | 320 | 37.4 | 0.0 (referent) | 0.0 (referent) | |
| <2 | 238 | 27.8 | −5.2 (−32.3, 32.6) | −9.2 (−35.5, 27.9) | |
| 2 to 4 | 138 | 16.1 | 13.7 (−23.7, 69.4) | 10.9 (−26.2, 66.4) | |
| 5 to 9 | 73 | 8.5 | 32.9 (−20.0, 121.0) | 27.3 (−23.8, 112.5) | |
| 10+ | 86 | 10.1 | −4.4 (−40.6, 53.9) | −4.4 (−40.9, 54.5) | |
a
Associations for marijuana smoking status, frequency and total years were adjusted for age, parity, breastfeeding history, race, education annual household income.
b
Associations for age started smoking marijuana were adjusted for age (continuous), race (non-Hispanic white, other), maternal education (did not complete high school, completed high school/GED, some college or more) and childhood household income (well off, middle income, low income, poor)