Estimated and expected hospitalisation rates of all-cause pneumonia in adults ≥18 years of age, 2014–2015
| Outcome | Estimated rate per 100 000 population* | Expected rate per 100 000 population† | Expected versus estimated hospitalisation rates in 2014–2015 | ||
| Rate difference per 100 000 population | 95% CI‡ per 100 000 population | Per cent reduction (%) | |||
| All-cause pneumonia | |||||
| Age (years) | |||||
| 18–49 | 120.1 | 164.2 | 44.1 | 35.3 to 52.9 | 26.9 |
| 50–64 | 348.8 | 488.8 | 140.6 | 122.1 to 158.9.0 | 28.8 |
| ≥65§ | 1820.4 | 1951.9 | 131.5 | 106.0 to 156.9 | 6.7 |
| 65–74 | 869.3 | 968.4 | 99.1 | 73.1 to 125.0 | 10.2 |
| 75–84 | 2260.5 | 2417.3 | 156.8 | 106.7 to 206.9 | 6.5 |
| ≥85 | 5097.5 | 5293.3 | 195.9 | 77.3 to 314.4 | 3.7 |
| Total§ | 598.8 | 708.0 | 109.3 | 96.5 to 121.9 | 15.4 |
| Pneumococcal pneumonia | |||||
| Age (years) | |||||
| 18–49 | 4.6 | 7.9 | 3.3 | 1.9 to 4.6 | 41.7 |
| 50–64 | 10.0 | 17.1 | 7.1 | 4.7 to 9.5 | 41.4 |
| ≥65§ | 18.9 | 19.4 | 0.5 | −0.9 to 1.9 | 2.5 |
| 65–74 | 17.4 | 19.1 | 1.7 | −0.7 to 4.2 | 9.1 |
| 75–84 | 21.7 | 16.3 | −5.4 | −5.9 to –4.8 | −33.0 |
| ≥85 | 18.9 | 31.9 | 13.0 | 3.4 to 22.6 | 40.6 |
| Total§ | 9.5 | 12.9 | 3.5 | 2.5 to 4.4 | 26.5 |
| Empyema | |||||
| Age (years) | |||||
| 18–49 | 2.8 | 3.0 | 0.2 | −0.1 to 0.6 | 7.0 |
| 50–64 | 8.5 | 11.1 | 2.6 | 1.2 to 4.0 | 23.4 |
| ≥65§ | 13.8 | 18.4 | 4.6 | 1.9 to 7.2 | 24.9 |
| 65–74 | 13.4 | 17.3 | 3.8 | 0.5 to 7.1 | 22.2 |
| 75–84 | 13.8 | 19.1 | 5.3 | 0.2 to 10.4 | 27.8 |
| ≥85 | 15.9 | 22.5 | 6.6 | −3.3 to 16.4 | 29.2 |
| Total§ | 7.0 | 8.5 | 1.5 | 0.9 to 2.1 | 17.5 |
*Estimated rate is the average hospitalisation rate estimated from the adjusted negative binomial regression model, which included as independent variables the time since the beginning of the study and time since the start of the intervention period. The year 2010–2011 was considered a transitional period and excluded from the analysis.
†Expected rate is the average hospitalisation rate estimated from the adjusted model with the time since the beginning of the study as the independent variable.
‡95% CIs are estimated using Delta method and were considered significant if they did not include zero.
§Analyses for the aggregate age groups (ie, the total (≥18 years of age) and the ≥65 years of age) were age adjusted using the following age groups: all age groups in the analyses for the total, and the 65–74, 75–84 and ≥85 years of age in the analyses for the ≥65 years of age group.