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

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

	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)

*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).

ISSN: 1471-2431