Table 1. Characteristics of 974 children enrolled in outpatient pneumococcal colonization surveys at Angkor Hospital for Children, Siem Reap, Cambodia, January and August 2014*.
| Characteristic | Overall | January 2014 | August 2014 | p value† |
|---|---|---|---|---|
| Total no. enrolled | 974 | 455 | 519 | |
| Age, median (IQR) |
2.5 (0.9–5.1) |
1.9 (0.9–4.1) |
2.9 (1.1–6.0) |
<0.001 |
| Age category, no. (%) | ||||
| 1–11 mo | 262 (26.9) | 142 (31.2) | 120 (23.1) | 0.005 |
| 12–59 mo | 459 (47.1) | 231 (50.8) | 228 (43.9) | 0.03 |
| 5–15 y |
253 (26.0) |
82 (18.0) |
171 (33.0) |
<0.001 |
| Male sex, no. (%) |
499 (51.2) |
241 (53.0) |
258 (49.7) |
0.3 |
| Reason for outpatient visit, no. (%) | ||||
| Upper respiratory tract infection | 794 (81.5) | 394 (86.6) | 400 (77.1) | <0.001 |
| Gastroenteritis | 92 (9.5) | 47 (10.3) | 45 (8.7) | 0.4 |
| Other |
88 (9.0) |
14 (3.1) |
74 (14.2) |
<0.001 |
| Antimicrobial drug use in preceding month, no. (%)‡ |
453/967 (46.8) |
149/453 (32.9) |
175/514 (34.0) |
0.7 |
| Household size, median (IQR) | 5 (4–6) | 5 (4–7) | 5 (4–6) | 0.01 |
| Other children <5 y of age in household, no. (%) | 841/973 (86.4) | 422/454 (93.0) | 419 (80.7) | <0.001 |
| Attendance at school or daycare, no. (%) | 293/973 (30.1) | 105/454 (23.1) | 188 (36.2) | <0.001 |
*Weather conditions were cool and dry in January and hot and wet in August. Where data were missing, an alternate denominator is included in the affected cell. IQR, interquartile range. †For proportions, comparisons were made by using the χ2 test. For continuous variables, comparisons were made by using the Wilcoxon rank-sum test. ‡Includes definite and possible (unknown systemic medication) consumption in the community before outpatient visit.