Infant, maternal and demographic predictors of delayed vaccination: A population-based cohort study.
Heather F Gidding, Lloyd K Flack, Sarah Sheridan, Bette Liu, Parveen Fathima, Vicky Sheppeard, Peter Richmond, Brynley Hull, Christopher Blyth, Ross M Andrews, Thomas L Snelling, Nicholas de Klerk, Peter B McIntyre, Hannah C Moore, undefined ACIR linkage Investigator Team
Vaccine | Published : 2020
BACKGROUND: Receiving vaccines at or close to their due date (vaccination timeliness) is a now key measure of program performance. However, studies comprehensively examining predictors of delayed infant vaccination are lacking. We aimed to identify predictors of short and longer-term delays in diphtheria-tetanus-pertussis (DTP) vaccination by dose number and ethnicity. METHODS: Perinatal, notification, death and immunisation databases were linked for 1.3 million births in 2000-11 from two Australian states (Western Australia and New South Wales), with follow-up data until 2013. Ordinal logistic regression was used to estimate adjusted relative risks (RR) by degree of delay. Separate models w..View full abstract