Socio-demographic and health-related predictors of uptake of first MMR immunisation in the Lifeways Cohort Study.

The aim of this study was to investigate the uptake of the first dose of measles, mumps and rubella (MMR) vaccine and factors associated with not receiving this vaccine. A cross-generation cohort study was conducted with prospective linkage to primary care and hospital health records in urban and rural settings in Ireland 2001-2004. Seven hundred and forty-nine singleton children were included, with an MMR uptake of 88.7% by the age of 5 years. These data confirm prospectively for the first time that in addition to factors associated with disadvantage, other health practices and beliefs, particularly mother's complementary and alternative medicine use, are associated with decreased MMR uptake (adjusted OR 2.65 (1.76-3.98)). This information suggests that parental attitudes and beliefs regarding vaccines must be considered when developing programmes to improve immunisation uptake.

Determinants of partial or no primary immunisations.

OBJECTIVE: To determine if different factors affect children having full, partial or no primary immunisations. METHODS: This was a crossgenerational cohort study with linkage to primary care and hospital records conducted in urban and rural settings in Ireland, recruiting in 2001-2003 with 5-year follow-up. A total of 749 children with immunisation information took part. RESULTS: The uptake of reported primary immunisations was 92.8% full, 4.9% partial and 2.3% no primary immunisations. Adjusted relative risk ratios for children receiving no primary immunisations were significant for: having a mother who had ever visited an alternative practitioner 3.69 (1.05 to 12.9), a mother with means tested full general medical services eligibility 8.11 (1.58 to 41.65), a mother who scored <50 for the World Health Organization Quality of Life (WHO-QOL) scale psychological domain 8.82 (1.79 to 43.6) or living in the west of Ireland (rural) 3.64 (1.0 to 13.2). Being born prematurely was associated with partial primary immunisation, adjusted OR 4.63 (1.24 to 17.3). CONCLUSIONS: Knowledge of these differences will help target campaigns to increase full uptake of primary immunisations.