Table 2

 Frequency of respiratory symptoms at 6, 12, and both 6 and 12 months

6 months*12 months†6 and 12 months
Data are percentage of positive responses to each question (number of positives/number responding to each question).
*6 month questionnaire completed at 5–8 months.
†12 month questionnaire completed at 11–15 months.
‡Totals indicate maximum number responding. The 6 and 12 month analysis required children to have a positive response at both time points. Therefore children who reported “no” to a symptom at one time point and had no response (missing) at the other were classified as “no” overall.
Total‡386430459
Cough49% (189/386)51% (219/430)27% (107/403)
Frequent cough20% (77/239)18% (76/427)6% (26/459)
Cough without infection23% (86/367)21% (89/415)6% (28/439)
Wheeze40% (152/382)42% (171/409)20% (84/415)
Frequent wheeze16% (61/375)13% (50/399)3% (14/456)
Wheeze without infection20% (71/362)18% (73/402)6% (26/445)
Bronchodilators22% (84/386)36% (156/430)14% (63/459)
Inhaled steroids13% (103/381)17% (71/430)8% (37/459)
Bronchodilators or inhaled steroids27% (103/381)38% (165/429)15% (67/433)