Table 3.
Results of bivariate regression analysis between invasive pneumococcal disease rates and respiratory virus infection rates and temperature for concurrent months and 1-month lag. Catalonia, 2006–2012
| Variable | All ages | <5 years | 5–64 years | ≥65 years | ||||
|---|---|---|---|---|---|---|---|---|
| No laga | 1-month lagb | No laga | 1-month lagb | No laga | 1-month lagb | No laga | 1-month lagb | |
| IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | IRR (95 % CI) | |
| Influenza | 2.13 (1.71–2.63) | 1.85 (1.46–2.33) | 1.86 (1.44–2.39) | 1.59 (1.22–2.07) | 2.08 (1.69–2.57) | 1.84 (1.47–2.31) | 1.37 (1.03–1.83) | 1.29 (0.96–1.74) |
| RSV | 2.41 (1.78–3.22) | 2.94 (2.21–3.87) | 2.49 (1.76–3.48) | 3.22 (2.31–4.47) | 1.82 (1.45–2.29) | 1.76 (1.40–2.24) | 1.59 (1.13–2.30) | 1.66 (1.19–2.40) |
| Adenovirus | 3.47 (1.39–7.30) | 3.44 (1.37–7.25) | 4.43 (2.25–8.61) | 1.62 (0.85–2.89) | 1.14 (0.88–1.47) | 1.11 (0.86–1.44) | 1.35 (0.85–2.30) | 1.19 (0.74–2.03) |
| Temperature >17 °C | 0.39 (0.35–0.46) | 0.45 (0.37–0.55) | 0.44 (0.35–0.55) | 0.55 (0.43–0.71) | 0.39 (0.33–0.46) | 0.45 (0.37–0.55) | 0.37 (0.32–0.44) | 0.41 (0.34–0.49) |
Abbreviations: IRR Incidence rate ratio, CI Confidence interval, RSV respiratory syncytial virus
aConcurrent month
bPreceding month