Table 3.
Serotype distribution by age group
| Serotype | Age < 65 years (N = 132) |
Age ≥ 65 years (N = 71) |
P value |
|---|---|---|---|
| 3 | 17 (16) | 15 (25.4) | 0.143 |
| 4 | 11 (10.3) | 2 (3.3) | 0.138 |
| 8 | 9 (8.4) | 4 (6.7) | 0.772 |
| 1 | 15 (14.1) | 7 (11.8) | 0.678 |
| 19A | 9 (8.4) | 5 (8.4) | 0.997 |
| 14 | 5 (4.7) | 3 (5.1) | 1 |
| 7F | 19 (17.9) | 4 (6.7) | 0.033 |
| 22 | 4 (3.7) | 3 (5.1) | 0.701 |
| Clusters | |||
| High risk (3 + 6A+ 6B + 9 N + 19F + 19A + 23F) | 28 (26.4) | 22 (37.2) | 0.145 |
| Intermediate risk (9 V + 12F + 14 + 22F) | 8 (7.5) | 5 (8.4) | 1 |
| Low risk (1 + 7F + 8 + 4 + 5) | 44 (41.5) | 17 (28.8) | 0.105 |
Data are given as frequency (percentage). Percentages exclude patients with missing data