Table 3.
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 = 11,460a
| Model 3 | Model 4 | Model 5 | |
|---|---|---|---|
| AOR (95 % CI) | AOR (95 % CI) | AOR (95 % CI) | |
| Level 1 fixed effectsb | |||
| STI risk factors | |||
| Age at first vaginal intercourse | |||
| 18–25 years | 1.60 (0.99, 2.56) | ||
| 16–17 years | 1.94 (1.25, 3.02)** | ||
| 10–15 years | 1.80 (1.15, 2.82)* | ||
| Has not has vaginal intercourse | 1.00 | ||
| STI in prior year (w1) | 0.92 (0.51, 1.66) | ||
| 3+ sex partners prior year (w3) | 1.52 (1.19, 1.94)** | ||
| Condom use last sex (w3) | 1.03 (0.84, 1.26) | ||
| Binge drinking prior year (w3) | 1.02 (0.95, 1.11) | ||
| Drug use prior year (w3) | 1.28 (0.98, 1.66) | ||
| Depression | |||
| Depressed wave 1 only | 0.94 (0.70, 1.25) | ||
| Depressed wave 3 only | 0.87 (0.66, 1.16) | ||
| Depressed waves 1 and 3 | 1.30 (0.90, 1.86) | ||
| Never depressed (reference) | 1.00 | ||
| Wave 3 neighborhood context | |||
| Proportion Black concentration | |||
| Immigrant concentration | |||
| Concentrated poverty | |||
| Residential instability | |||
| Proportion urban | |||
| Level 2 fixed effects | |||
| Wave 1 neighborhood context | |||
| Proportion Black concentration | 1.07 (0.97, 1.18) | 0.95 (0.84, 1.08) | 0.96 (0.85, 1.09) |
| Immigrant concentration | 0.94 (0.83, 1.07) | 0.91 (0.80, 1.05) | 0.91 (0.80, 1.05) |
| Concentrated poverty | 1.25 (1.08, 1.45)** | 1.23 (1.06, 1.42)** | |
| Residential instability | 0.92 (0.79, 1.06) | 0.92 (0.80, 1.06) | |
| Proportion urban | 0.76 (0.58, 1.01) | 0.79 (0.59, 1.06) | 0.80 (0.60, 1.06) |
| Intercept | 0.03 (0.02, 0.04)*** | 0.03 (0.02, 0.04)*** | 0.02 (0.01, 0.04)*** |
| Random effect | |||
| Tau | 0.02060 | 0.03706 | 0.00018 |
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, waves 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