Table 2.
Estimated Proportions and Odds Ratios (ORs) of any Primary Care Use for whites and Hispanics, for Strata and Combined Overall across Strata for the PS Stratification Method, using Hispanics, Whites and the Combined Sample as Reference Samples
| Ethnicity | N | Mean (se) | Difference (se) | Odds ratios (whites vs Hispanics) | |
|---|---|---|---|---|---|
| PS Stratification, Hispanics as reference sample | |||||
| Stratum (from lowest to highest propensity for being Hispanic) | |||||
| 1 | White | 1470 | 0.381 (0.013) | 0.022 (0.042) | 1.10 |
| Hispanics | 142 | 0.359 (0.040) | |||
| 2 | White | 789 | 0.346 (0.017) | 0.128 (0.040)** | 1.90** |
| Hispanics | 133 | 0.218 (0.036) | |||
| 3 | White | 321 | 0.308 (0.026) | 0.157 (0.040)*** | 2.51** |
| Hispanics | 139 | 0.151 (0.030) | |||
| 4 | White | 160 | 0.231 (0.033) | 0.134 (0.042)** | 2.80*** |
| Hispanics | 134 | 0.097 (0.026) | |||
| 5 | White | 58 | 0.241 (0.056) | 0.175 (0.060)** | 4.49** |
| Hispanics | 136 | 0.066 (0.021) | |||
| Overall | White | 2798 | 0.302 (0.033) 1 | ||
| Hisp | 684 | 0.178 (0.031) 1 | 0.123 (0.045)** | 1.99 (1.58, 2.51) 2 | |
|
| |||||
| PS Stratification, whites as reference sample | |||||
| Stratum (from lowest to highest propensity for being Hispanic) | |||||
| 1 | White | 572 | 0.406 (0.021) | 0.011 (0.082) | 1.05 |
| Hispanics | 38 | 0.395 (0.079) | |||
| 2 | White | 553 | 0.354 (0.020) | 0.054 (0.063) | 1.28 |
| Hispanics | 60 | 0.300 (0.059) | |||
| 3 | White | 562 | 0.386 (0.021) | 0.035 (0.059) | 1.16 |
| Hispanics | 74 | 0.351 (0.055) | |||
| 4 | White | 552 | 0.330 (0.020) | 0.118 (0.046)* | 1.83* |
| Hispanics | 99 | 0.212 (0.041) | |||
| 5 | White | 559 | 0.279 (0.019) | 0.175 (0.024)*** | 3.33*** |
| Hispanics | 413 | 0.104 (0.015) | |||
| Overall | White | 2798 | 0.351 (0.020) 1 | ||
| Hisp | 684 | 0.272 (0.054) 1 | 0.079 (0.058) | 1.44 (1.12, 1.87) 2 | |
|
| |||||
| PS Stratification, combined whites/Hispanics as reference sample | |||||
| Stratum (from lowest to highest propensity for being Hispanic) | |||||
| 1 | White | 751 | 0.403 (0.018) | 0.101 (0.072) | 1.56 |
| Hispanics | 43 | 0.302 (0.070) | |||
| 2 | White | 571 | 0.354 (0.020) | 0.009 (0.066) | 1.04 |
| Hispanics | 58 | 0.345 (0.062) | |||
| 3 | White | 581 | 0.348 (0.020) | 0.069 (0.050) | 1.38 |
| Hispanics | 97 | 0.278 (0.043) | |||
| 4 | White | 553 | 0.340 (0.020) | 0.120 (0.040)** | 1.83** |
| Hispanics | 141 | 0.220 (0.035) | |||
| 5 | White | 342 | 0.257 (0.024) | 0.165 (0.028)*** | 3.39*** |
| Hispanics | 345 | 0.093 (0.015) | |||
| Overall | White | 2798 | 0.340 (0.020) 1 | ||
| Hisp | 684 | 0.248 (0.050) 1 | 0.093 (0.054)† | 1.57 (1.23, 2.00) 2 | |
1
The overall mean is simple average of the means from the five strata and pooled SE is calculated based on (16).
2
Pooled OR is calculated from the pooled proportion from white/Hispanic groups; 95% CIs were generated using bootstrap method.
†
p<0.10,
*
p<0.05,
**
p<0.01,
***
p<0.001