|
Demographic characteristics of the study children. |
|||
| Characteristics |
PCV-7 group (n = 811) |
Control group (n = 744) |
P |
|
|
|||
| Males (%) |
476 (58.7) |
413 (55.5) |
0.22 |
| Age at vaccination, median days (range) |
|||
| First dose |
82 (75–104) |
82 (76–103) |
0.96 |
| Second dose |
140 (128–155) |
143 (130–158) |
0.93 |
| Third dose |
340 (328–361) |
343 (331–364) |
0.92 |
| Breast-feeding for at least three months, No. (%) |
551 (67.9) |
476 (64.1) |
0.11 |
| Living in urban area, No. (%) |
527 (65.0) |
498 (66.9) |
0.44 |
| Mother's age, median years (range) |
33 (24–49) |
33 (20–46) |
0.96 |
| Father's age, median years (range) |
35 (21–50) |
35 (21–51) |
0.99 |
| No. of persons in household, median (range) |
3 (2–4) |
3 (2–4) |
1.00 |
| No. of siblings, median (range) |
1 (0–2) |
1 (0–2) |
1.00 |
| Children with a smoker in the family, No. (%) |
194 (23.9) |
182 (24.5) |
0.84 |
| Children attending day-care, No. (%) |
284 (35.0) |
231 (31.0) |
0.10 |
| Duration of day care attendance, No. (%) |
|||
| 0–6 months |
79 (9.7) |
65 (8.7) |
0.55 |
| 7–12 months |
33 (4.1) |
44 (5.9) |
0.11 |
| 13–18 months |
111 (13.7) |
94 (12.6) |
0.59 |
| 19–24 months |
78 (9.6) |
58 (7.8) |
0.23 |
| Vaccinated against influenza, No. (%) |
12 (1.5) |
10 (1.3) |
0.99 |
|
No significant between-group differences. | |||
Esposito et al. Respiratory Research 2007 8:12 doi:10.1186/1465-9921-8-12 |
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