Table 2.
Multilevel logistic regression: relationships between the neighborhood social context and chlamydia in young adulthood—National Survey of Adolescent Health (Add Health), waves 1–3, N = 11,460
| Model 1 | Model 2 | |
|---|---|---|
| AOR (95 % CI) | AOR (95 % CI) | |
| Level 1 fixed effects | ||
| STI risk factors | ||
| Age at first vaginal intercourse | ||
| 18–25 years | ||
| 16–17 years | ||
| 10–15 years | ||
| Has not has vaginal intercourse | ||
| STI in prior year (w1) | ||
| 3+ sex partners prior year (w3) | ||
| Condom use last sex (w3) | ||
| Binge drinking prior year (w3) | ||
| Drug use prior year (w3) | ||
| Depression | ||
| Depressed wave 1 only | ||
| Depressed wave 3 only | ||
| Depressed waves 1 and 3 | ||
| Never depressed (reference) | ||
| Wave 3 neighborhood context | ||
| Proportion Black concentration | 1.08 (0.96, 1.21) | 1.04 (0.90, 1.21) |
| Immigrant concentration | 1.01 (0.89, 1.15) | 0.99 (0.86, 1.14) |
| Concentrated poverty | 1.06 (0.89, 1.25) | |
| Residential instability | 0.99 (0.86, 1.15) | |
| Proportion urban | 0.94 (0.69, 1.28) | 0.96 (0.69, 1.31) |
| Level 2 fixed effects | ||
| Wave 1 neighborhood context | ||
| Proportion Black concentration | ||
| Immigrant concentration | ||
| Concentrated poverty | ||
| Residential instability | ||
| Proportion urban | ||
| Intercept | 0.03 (0.02, 0.04)*** | 0.03 (0.02, 0.04)*** |
| Random effect | ||
| Tau | 0.02435 | 0.02563 |
aUnweighted analysis adjusted for wave 1 stratification variables of geographic region, school urbanicity, school size, and ethnic mix
bAll models also included the following control variables: gender, age, race and ethnicity, foreign birth, sexual orientation, wave 1 family structure, number of residential move between waves, wave 1 and 3 economic hardship, and wave 3 marital status, employment, school attendance, living with parents, and antibiotic use
*p < 0.05; **p < 0.01; ***p < 0.001