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Table 2 Odds ratios of being examined and being in need of treatment after an examination by age group. All patients included that have been examined at least once

From: Frequency of visits and examinations in the Public Dental Service in Finland – a retrospective analysis, 2001–2013

  Random effects; number of at least once examined patients/all their visiting years Fixed effects; number of patients examined at least two times/their pairs of examination years Random effects; only visits with examinations/odds being in need of treatment Fixed effects; including only patients examined at least two times/odds being in need of treatment
  n/observations OR (95% CI) n/observations OR (95% CI) n/observations OR (95% CI) n/observations OR (95% CI)
All age groups 292700/1141446 151657/862118 235891/692269 85905/411062
< 18 years 4.97(4.89–5.05)   0.31(0.30–0.32)  
18–64 years 1.09(1.08–1.12)   1.72(1.67–1.77)  
65+ years ref   ref  
Visiting year (per 5 years) 0.74(0.73–0.74) 0.60(0.59–0.60) 0.85(0.84–0.86) 1.52(1.77–2.09)
Only < 18 years 114116/498986 54161/345099 110254/395922 49646/263383
Visiting year (per 5 years) 0.75(0.74–0.75) 0.48(0.48–0.49) 0.96(0.95–0.97) 2.21(2.17–2.24)
Only 18–64 years 178423/549528 86367/411548 126868/256528 30309/108547
Visiting year (per 5 years) 0.69(0.69–0.70) 0.65(0.65–0.66) 0.83(0.82–0.84) 0.87(0.85–0.89)
Only 65+ years 32,139/92932 14,056/64912 20,281/39819 4532/15416
Visiting year (per 5 years) 1.04(1.02–1.06) 0.80(0.78–0.83) 0.76(0.73–0.79) 0.70(0.66–0.75)
  1. All odds ratios are significant at p < 0.01