Table 3.
Adjusted hazard ratios for age at migration (reference: 50 and older) predicting cardiovascular mortality as measured by Cox proportional hazard models; The Sacramento Area Latino Study on Aging (SALSA); 1998–2006.
| Age at migration | Model 1 | Model 2 | Model 3 | Model 4 |
|---|---|---|---|---|
| CVD Mortality | Hazard Ratio (95% CI) | |||
| <20 years | 1.90 (0.95, 3.78) | 2.08 (1.04, 4.16) | 2.97 (1.44, 6.16) | 2.39 (1.16, 4.94) |
| 20–49 | 1.55 (0.61, 2.19) | 1.45 (0.76, 2.79) | 1.60 (0.83, 3.10) | 1.35 (0.70, 2.60) |
| 50 and older | 1.00 | 1.00 | 1.00 | 1.00 |
| Age | 1.12 (1.09, 1.15) | 1.12 (1.09, 1.15) | 1.11 (1.08, 1.14) | |
| Sex | 2.05 (1.31, 3.21) | 2.17 (1.36, 3.44) | 1.91 (1.19, 3.04) | |
| Education | 1.75 (1.05, 2.92) | 1.57 (0.93, 2.66) | ||
| Income | 1.53 (0.81, 2.88) | 1.43 (0.76, 2.71) | ||
| CVD | 2.39(1.50, 3.80) | |||
| Diabetes | 2.11 (1.32, 3.36) | |||
| Hypertension | 0.89 (0.51, 1.48) | |||
| −2log | 1033.20 | 952.10 | 927.37 | 901.90 |
| LRT (df) | - | 81.10 | 105.82 | 131.29 |
| p-value | <0.0001 | <0.0001 | <0.0001 | |
Model 1: unadjusted including only age at migration indicator variables
Model 2: Model 1 + age (continuous) and sex (1=male)
Model 3: Model 2+ education (<4 years) and income (≤$1,500)
Model 4: Model 3 + prevalent chronic disease at baseline (cardiovascular disease, diabetes and hypertension)
Likelihood Ratio Test. Calculated as difference in the −2log likelihood for the reduced and full models to evaluate if adding age at migration categories result in a significant improvement in the model. Referent model refers to (−2Log L) after excluding age at migration categories. LRT> χ2 (2) =5.99.
LRT statistic associated two-tailed p-value.