Table 7.
Multivariable Associations between Past 12-Month Marijuana Use Latent Class Membership and Age 50 Health Outcomes
| %a | AORb | (99% CIc) | p | % | AOR | (99% CI) | p | |
|---|---|---|---|---|---|---|---|---|
| 30-day respiratory health problems | 30-day cognitive health problems | |||||||
| Non-users | 16.7 | (ref) | 42.7 | (ref) | ||||
| Early Young Adult Moderate (EYAM) | 17.9 | 0.98 | (0.83, 1.16) | 0.763 | 44.9 | 1.06 | (0.94, 1.21) | 0.211 |
| Young Adult/Persistent Moderate (YA/PM) | 20.0 | 1.04 | (0.88, 1.23) | 0.578 | 48.1 | 1.21 | (1.06, 1.38) | <0.001 |
| Early Young Adult Heavy (EYAH) | 17.4 | 0.87 | (0.66, 1.15) | 0.205 | 44.8 | 1.09 | (0.88, 1.34) | 0.316 |
| Young Adult/Persistent Heavy (YA/PH) | 23.1 | 1.00 | (0.80, 1.24) | 0.990 | 48.4 | 1.22 | (1.02, 1.45) | 0.004 |
| YA/PH vs. EYAM (ref) | 1.02 | (0.81, 1.27) | 0.832 | 1.14 | (0.96, 1.37) | 0.052 | ||
| YA/PM vs. EYAM (ref) | 1.06 | (0.88, 1.28) | 0.440 | 1.14 | (0.98, 1.31) | 0.025 | ||
| YA/PH vs. EYAH (ref) | 1.15 | (0.85, 1.55) | 0.249 | 1.12 | (0.89, 1.42) | 0.214 | ||
| YA/PH vs. YA/PM (ref) | 0.96 | (0.77, 1.20) | 0.655 | 1.01 | (0.85, 1.20) | 0.911 | ||
| Overall poor physical health | 12-month physical illness visits | |||||||
| Non-users | 12.8 | (ref) | 49.2 | (ref) | ||||
| Early Young Adult Moderate | 12.9 | 0.93 | (0.77, 1.12) | 0.308 | 49.6 | 1.04 | (0.91, 1.17) | 0.473 |
| Young Adult/Persistent Moderate | 14.6 | 0.98 | (0.80, 1.18) | 0.739 | 51.9 | 1.18 | (1.04, 1.35) | 0.001 |
| Early Young Adult Heavy Users | 12.7 | 0.86 | (0.62, 1.18) | 0.219 | 48.9 | 1.05 | (0.85, 1.30) | 0.533 |
| Young Adult/Persistent Heavy | 16.3 | 0.95 | (0.74, 1.22) | 0.604 | 52.0 | 1.29 | (1.08, 1.53) | <0.001 |
| YA/PH vs. EYAM (ref) | 1.03 | (0.80, 1.32) | 0.803 | 1.24 | (1.04, 1.48) | 0.002 | ||
| YA/PM vs. EYAM (ref) | 1.05 | (0.85, 1.30) | 0.552 | 1.14 | (0.99, 1.32) | 0.018 | ||
| YA/PH vs. EYAH (ref) | 1.11 | (0.78, 1.57) | 0.447 | 1.22 | (0.97, 1.55) | 0.028 | ||
| YA/PH vs. YA/PM (ref) | 0.98 | (0.76, 1.25) | 0.797 | 1.09 | (0.91, 1.30) | 0.228 | ||
| 12-month psychological visits | Lifetime psychiatric problem | |||||||
| Non-users | 7.7 | (ref) | 8.7 | (ref) | ||||
| Early Young Adult Moderate | 11.0 | 1.53 | (1.24, 1.89) | <0.001 | 11.6 | 1.42 | (1.15, 1.74) | <0.001 |
| Young Adult/Persistent Moderate | 13.7 | 1.96 | (1.59, 2.41) | <0.001 | 12.9 | 1.59 | (1.29, 1.96) | <0.001 |
| Early Young Adult Heavy Users | 11.6 | 1.80 | (1.29, 2.51) | <0.001 | 12.5 | 1.64 | (1.18, 2.28) | <0.001 |
| Young Adult/Persistent Heavy | 11.5 | 1.85 | (1.39, 2.46) | <0.001 | 12.9 | 1.76 | (1.34, 2.32) | <0.001 |
| YA/PH vs. EYAM (ref) | 1.21 | (0.91, 1.60) | 0.083 | 1.25 | (0.95, 1.64) | 0.038 | ||
| YA/PM vs. EYAM (ref) | 1.28 | (1.02, 1.59) | 0.005 | 1.12 | (0.90, 1.40) | 0.187 | ||
| YA/PH vs. EYAH (ref) | 1.03 | (0.72, 1.48) | 0.831 | 1.07 | (0.75, 1.53) | 0.609 | ||
| YA/PH vs. YA/PM (ref) | 0.95 | (0.72, 1.24) | 0.600 | 1.11 | (0.85, 1.45) | 0.307 | ||
| Lifetime alcohol problem | Lifetime drug problem | |||||||
| Non-users | 1.0 | (ref) | 0.5 | (ref) | ||||
| Early Young Adult Moderate | 1.6 | 1.00 | (0.58, 1.71) | 0.999 | 0.9 | 1.64 | (0.80, 3.39) | 0.078 |
| Young Adult/Persistent Moderate | 3.5 | 1.74 | (1.08, 2.80) | 0.003 | 1.5 | 2.45 | (1.26, 4.75) | 0.001 |
| Early Young Adult Heavy Users | 3.1 | 1.61 | (0.82, 3.15) | 0.068 | 2.2 | 3.93 | (1.70, 9.13) | <0.001 |
| Young Adult/Persistent Heavy | 7.0 | 2.35 | (1.40, 3.93) | <0.001 | 5.0 | 7.78 | (3.99,15.17) | <0.001 |
| YA/PH vs. EYAM (ref) | 2.35 | (1.40, 3.93) | <0.001 | 4.74 | (2.46, 9.11) | <0.001 | ||
| YA/PM vs. EYAM (ref) | 1.74 | (1.05, 2.86) | 0.004 | 1.49 | (0.75, 2.96) | 0.133 | ||
| YA/PH vs. EYAH (ref) | 1.46 | (0.79, 2.70) | 0.115 | 1.98 | (0.96, 4.09) | 0.016 | ||
| YA/PH vs. YA/PM (ref) | 1.35 | (0.89, 2.06) | 0.065 | 3.18 | (1.81, 5.57) | <0.001 | ||
Notes: Ns (unweighted) for each outcome: respiratory problems = 9,636; cognitive problems = 9,631; overall physical health = 9,538; physical illness visits = 9,624; psychological problem visits = 9.620; psychiatric problem = 9,624; alcohol problem = 9,634; drug problem = 9,631. All other estimates have been weighted using attrition weights. Bold font indicates associations significant at p <.01 or stronger.
Unadjusted weighted percentage of each specified class reporting the listed age 50 health outcome.
AOR=Adjusted odds ratio; obtained from models simultaneously controlling for past 12-month marijuana use latent class membership as well as gender, race/ethnicity, parental education, religious commitment, age 18 binge drinking and cigarette use, marriage, college graduation, ages 35-45 income from welfare/unemployment, ages 35-45 cigarette use frequency, ages 35-45 alcohol use frequency, and cohort. Missing data on covariates were addressed by imputing means (for continuous measures) together with the use of missing data indicators.
CI=Confidence interval.