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Table 3 Crude and adjusted prevalence ratios for Boerge Prien test (BPP) scores overall and according to age

From: Hospitalisation with otitis media in early childhood and cognitive function in young adult life: a prevalence study among Danish conscripts

  Total men with BPP score in the bottom quartile PR for BPP score in the bottom quartile
   n (%) n (%)  
    Crude PR Adjusted* PR
Hospitalisation with OM     
No 17 412 4370 (25.1) 1 1
Yes 1000 312 (31.2) 1.24 (1.13–1.37) 1.20 (1.09–1.33)
Age at first hospitalisation with OM     
< 1 year 83 30 (36.1) 1.44 (1.08–1.92) 1.38 (1.04–1.83)
1–2 years 528 163 (31.0) 1.23 (1.07–1.40) 1.17 (1.03–1.33)
3–5 years 279 85 (30.5) 1.22 (1.02–1.45) 1.24 (1.03–1.49)
6–7 years 110 34 (30.9) 1.23 (0.93–1.63) 1.17 (0.89–1.54)
  1. *Based on log binomial regression using multiple imputation for the following variables: gestational age (<37, 37–41, >41), gestational age adjusted birth weight (SGA, non-SGA), birth order (1,2,3,4+), maternal age (20, 21–35, >35 years), marital status (married/unmarried), and Apgar score 5-minutes after birth (<7, ≥ 7).