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Table 3 Association of preventive primary care, comorbidity and social factors on risk of unplanned hospital admissiona

From: Impact of preventive primary care on children’s unplanned hospital admissions: a population-based birth cohort study of UK children 2000–2013

Adjusted hazard ratiob (95% confidence interval) Infant Preschool Primary school
(age < 1 year) (age 1–4 years) (age 5–9 years)
Incomplete vaccinationsc 1.20 (1.16–1.25) 1.89 (1.79–2.00) 1.27 (1.07–1.51)
No development checkd 4.63 (4.55–4.71) 1.19 (1.16–1.22) 1.09 (1.03–1.14)
Illness consultation ratee 1.00 (1.00–1.00) 1.17 (1.17–1.17) 1.23 (1.23–1.24)
Prematurity 1.21 (1.18–1.25) 1.26 (1.22–1.30) 1.12 (1.04–1.21)
Congenital conditions 2.40 (2.36–2.45) 1.17 (1.15–1.20) 1.15 (1.10–1.21)
Deprivationf 5 vs. 1 1.22 (1.20–1.25) 1.38 (1.34–1.41) 1.44 (1.37–1.51)
Maternal age < 20 vs. 20–39 years 1.33 (1.28–1.38) 1.35 (1.30–1.40) 1.28 (1.18–1.39)
40+ vs. 20–39 years 0.86 (0.83–0.90) 0.93 (0.89–0.97) 0.96 (0.88–1.05)
Being the firstborn child 0.88 (0.86–0.90) 0.97 (0.95–0.99) No association
Sex 0.83 (0.81–0.84) 0.87 (0.86–0.89) 0.80 (0.77–0.83)
  1. aCohort of children born between 01/01/2000 and 31/03/2013 registered with 363 practices partnered with the Clinical Practice Research Datalink practices linked to Hospital Episode Statistics in England and followed up until 31/12/2013
  2. bHazard ratios have been adjusted for listed covariates. Covariates were added sequentially to the models, p values of < 0.05 were considered statistically significant
  3. cIn modelling admissions in infants, incomplete vaccination is a time-updated variable. In children aged 1 and over, incomplete vaccination is less than three infant vaccinations
  4. dDid not complete infant development checks within primary care
  5. eAn illness consultation is a face-to-face consultation with a GP which is not for preventive care
  6. fIndex of multiple deprivation fifths (5 the most deprived, 1 least deprived)