Table 2.
Socioeconomic Factors
| Mean ± S.D. | Entire Study Population (n = 6,452) |
Any Tricare (n = 328) |
Always Private (n = 3,455) |
Tricare vs. Private P Value |
Always Public (n = 2,669) |
Tricare vs. Public P Value |
|
|---|---|---|---|---|---|---|---|
| Median household income at birth ($ ’000s; n=6,338)1 | 59.2 ± 23.3 | 58.4 ± 20.6 | 67.4 ± 25.0 | <0.001 | 48.7 ± 16.0 | <0.001 | |
| Highest level of maternal education at 6yo (% yes; n=5,194) | Less than high school or high school graduate | 29.5% | 21.6% | 11.2% | <0.001 | 55.6% | <0.001 |
| Some College | 19.7% | 28.0% | 14.5% | 25.6% | |||
| College graduate | 42.1% | 39.7% | 61.2% | 16.3% | |||
| Masters/doctoral degree | 8.7% | 10.6% | 13.2% | 2.5% | |||
| Mean number of residential zip codes between 0–6yo (n=6,414)2 | 1.6 ± 0.8 | 2.1 ± 0.9 | 1.5 ± 0.7 | <0.001 | 1.8 ± 0.8 | <0.001 | |
| Mean number of CF centers attended between 0-6yo 2 | 1.2 ± 0.5 | 1.7 ± 0.8 | 1.2 ± 0.4 | <0.001 | 1.2 ± 0.4 | <0.001 | |
| Number of CF centers attended between 0-6yo 2 | |||||||
| Attending 1 center (%) | 82.7% | 43.3% | 84.5% | <0.001 | 85.4% | <0.001 | |
| Attending 2 centers(%) | 15.1% | 40.9% | 13.8% | 13.4% | |||
| Attending 3 or more centers (%) | 2.2% | 15.9% | 1.7% | 1.2% | |||
| Mean distance between residential zip code and CF center between 0-6yo (miles; n=3,533)3 | 65 ± 107 | 89 ± 121 | 62 ± 124 | 0.006 | 66 ± 79 | 0.001 | |
1
Median household income was estimated from earliest residential zip code and 2010 U.S. census data (www.census.gov).
2
Number of residential zip codes and CF centers were tabulated using data prior to 6yo.
3
Mean distance to CF center was provided by the CFFPR from annualized data as the distance from residential zip code to CF center zip code and averaged between 0-6yo.