1,027,559
Participants
Start Date
January 1, 1997
Primary Completion Date
December 31, 2014
Study Completion Date
December 31, 2014
RQ1a: Delayed vs. timely vaccination with the 1st dose of DTaP-IPV-Hib
"Children will be categorized as timely vaccinated if they receive the 1st dose within the month of scheduled vaccination:~* timely vaccinated: received 1st dose of DTaP-IPV-Hib before 4 months of age~* delayed vaccinated: did not receive the first dose of DTaP-IPV-Hib before 4 months of age."
RQ1b: Delayed vs. timely vaccination with the 2nd dose of DTaP-IPV-Hib
"Children will be categorized as timely vaccinated if they receive the 2nd dose within the month of scheduled vaccination:~* timely vaccinated: received 2nd dose of DTaP-IPV-Hib before 6 months of age~* delayed vaccinated: did not receive the 2nd dose of DTaP-IPV-Hib before 6 months of age."
RQ2: Vaccination with DTaP-IPV-Hib compared to being unvaccinated
"• Vaccination status will be assessed as a time dependent exposure, whereby children will be categorized as unvaccinated until date of vaccination where they will shift exposure group to vaccinated."
Collaborators (1)
Murdoch Childrens Research Institute
OTHER
Bandim Health Project
OTHER