TABLE 1.
Characteristics of the study participants and changes from 2006 to 2008
| Parameter | No. (%) of children in yr |
P valuec | |
|---|---|---|---|
| 2006 | 2008 | ||
| Age group (mo) | NS | ||
| <24 | 87 (14.2) | 115 (19.1) | |
| 24-35 | 123 (20.1) | 108 (17.9) | |
| 36-47 | 133 (21.8) | 124 (20.6) | |
| 48-50 | 162 (26.5) | 140 (23.3) | |
| ≥60 | 106 (17.3) | 115 (19.1) | |
| Overall | 611 (100) | 602 (100) | |
| Sex | NS | ||
| Male | 326 (53.4) | 316 (52.5) | |
| Female | 285 (46.6) | 286 (47.5) | |
| Antibiotic use in the past 3 mo | 0.011 | ||
| No | 557 (91.2) | 570 (94.7) | |
| Yes | 54 (8.8) | 32 (5.3) | |
| RTIa in the past 3 mo | 0.016 | ||
| No | 553 (90.5) | 567 (94.2) | |
| Yes | 58 (9.5) | 35 (5.8) | |
| PCV7b immunization (no. of doses) | <0.001 | ||
| 0 | 573 (93.8) | 354 (58.8) | |
| 1 | 17 (2.8) | 11 (1.8) | |
| ≥2 | 21 (3.4) | 237 (39.4) | |
| No. of siblings < 6 yrs old | |||
| 0 | 303 (49.6) | 279 (46.3) | NS |
| 1 | 294 (48.1) | 296 (49.2) | NS |
| ≥2 | 14 (2.3) | 27 (4.5) | NS |
| Passive smoking | NS | ||
| No | 501 (82.0) | 520 (86.4) | |
| Yes | 110 (18.0) | 82 (13.6) | |
| Nasopharyngeal carriage per age group (mo) | NS | ||
| <24 | 71 (81.6) | 96 (83.5) | |
| 24-35 | 107 (87.0) | 95 (88.0) | |
| 36-47 | 103 (77.4) | 97 (78.2) | |
| 48-50 | 120 (74.1) | 110 (78.6) | |
| ≥60 | 74 (69.8) | 85 (73.9) | |
| Overall | 475 (77.7) | 483 (80.2) | |
a
RTI, upper respiratory tract infection.
b
PCV7, seven-valent pneumococcal conjugate vaccine.
c
P values are based on chi-square and Fisher's exact tests. NS, nonsignificant.