Table 1.
Hospitalization Rates for AHT per 100 000 Same-Aged Population
| Data Set by Age Range | IRR (95% CI) | |||||
|---|---|---|---|---|---|---|
| PHC4 Data Set | PHC4 vs HCUP Data Setsa | |||||
| Period 1 (1996–2002) | Period 2 (2003–2006) | Period 3 (2007–2013) | Period 2 + 3 (2003–2013) | Period 1 vs 3 | Period 1 vs (2 + 3) | |
| 0–11 mo | ||||||
| PHC4 | 42.7 (38.9–46.9) | 43.7 (38.6–49.4) | 46.1 (42.1–50.4) | 45.2 (42.0–48.6) | 1.1 (0.9–1.3) | 1.0 (0.9–1.2) |
| HCUP | 37.9 (35.7–40.1) | 37.2 (34.6–40.0) | 44.8 (42.6–47.1) | 42.0 (40.4–43.8) | ||
| 12–23 mo | ||||||
| PHC4 | 5.7 (4.4–7.4) | 6.0 (4.3–8.3) | 9.2 (7.5–11.3) | 8.0 (6.8–9.6) | 0.6 (0.4–0.9) | 0.7 (0.5–1.0) |
| HCUP | 7.4 (6.5–8.4) | 7.0 (6.1–8.1) | 7.4 (6.7–8.2) | 7.3 (6.7–7.9) | ||
| 0–23 mo | ||||||
| PHC4 | 24.1 (22.1–26.3) | 24.7 (22.1–27.8) | 27.7 (25.5–30.0) | 26.6 (24.9–28.4) | 0.9 (0.8–1.0) | 0.9 (0.8–1.0) |
| HCUP | 22.4 (21.2–23.6) | 19.9 (18.7–21.3) | 23.1 (22.1–24.2) | 22.0 (21.2–22.8) | ||
Abbreviations: AHT, abusive head trauma; HCUP, Healthcare Cost and Utilization Project; IRR, incidence rate ratio; PHC4, Pennsylvania Healthcare Cost Containment Council.
a
Represented as a ratio of both IRRs.