Table 1.
Summary statistics for key outcome and explanatory variables, 2002–06
| Mean (SD) | 2002–2003 | 2003–2004 | 2004–2005 | 2005–2006 | Overall |
|---|---|---|---|---|---|
| Pneumonia and influenza rate* | 39.4 (9.7) | 42.9 (10.4) | 44.2 (10.7) | 40.5 (9.5) | 41.8 (10.2) |
| Pneumonia rate* | 39.2 (9.6) | 41.5 (9.9) | 42.8 (10.0) | 39.8 (9.2) | 40.8 (9.7) |
| Influenza rate* | 0.2 (0.2) | 1.4 (0.8) | 1.5 (1.0) | 0.9 (0.4) | 1.0 (0.8) |
| Pneumonia and influenza rate in 65–74* | 20.5 (5.6) | 23.0 (6.3) | 23.3 (6.3) | 21.7 (5.7) | 22.1 (6.1) |
| Pneumonia and influenza rate in 75–84* | 45.5 (11.2) | 49.0 (11.8) | 50.6 (12.2) | 46.0 (11.0) | 47.8 (11.7) |
| Pneumonia and influenza rate in 85+* | 98.3 (21.9) | 104.3 (23.4) | 106.8 (23.3) | 96.5 (20.2) | 101.5 (22.5) |
| Percent of all P&I cases that are influenza | 0.6 (0.3) | 3.2 (1.4) | 3.2 (1.7) | 2.1 (0.8) | 2.3 (1.6) |
| P&I rate acceleration (× 100)** | 7.6 (0.5) | 7.4 (0.5) | 7.5 (0.7) | 7.3 (0.7) | 7.4 (0.6) |
| Pneumonia rate acceleration (× 100)** | 7.6 (0.5) | 7.4 (0.5) | 7.4 (0.7) | 7.3 (0.7) | 7.4 (0.6) |
| Influenza rate acceleration (× 100)** | 9.0 (1.7) | 7.7 (1.5) | 8.6 (1.2) | 8.1 (1.4) | 8.4 (1.5) |
| Influenza vaccination coverage in children (%) | 8.3 (4.8) | 18.8 (7.7) | 32.6 (9.5) | 33.5 (10.5) | 23.3 (13.4) |
| Influenza vaccination coverage in 65+ (%) | 69.4 (4.2) | 69.9 (4.2) | 67.3 (5.0) | 67.2 (4.6) | 68.5 (4.6) |
*
Per 1,000 older adults
**
The disease rate acceleration coefficient is a measure of the increase (on the log scale) in hospitalization rates for each singe-year increase in age for the population aged 65+.