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Table 1 Cohort structure and mean over-the-counter (OTC) drug prices with 95% confidence intervals (CI)

From: Prices of over-the-counter drugs used by 15-year-old adolescents in Germany and their association with socioeconomic background

  n adolescentsa n OTC drugs usedb mean OTC drug price in € 95% CI
Total cohort 4677 1499 9.75 (9.27–10.22)
Gender
 Male 2365 656 10.14 (9.27–11.01)
 Female 2312 843 9.44 (8.92–9.95)
Study area
 Munich 2343 752 10.74 (9.97–11.52)
 Leipzig 414 122 9.19 (7.87–10.51)
 Bad Honnef 188 72 8.66 (7.32–10.00)
 Wesel 1732 553 8.65 (7.98–9.32)
Maternal educational level
 Low 482 113 9.35 (7.71–10.99)
 Medium 1731 572 9.13 (8.34–9.92)
 High 2277 746 10.20 (9.52–10.88)
Paternal educational level
 Low 926 240 8.12 (7.41–8.83)
 Medium 989 294 10.13 (9.02–11.24)
 High 2458 869 10.17 (9.47–10.86)
Household income
 Low 686 206 9.18 (7.92–10.44)
 Medium 1526 534 9.44 (8.77–10.11)
 High 1817 583 10.24 (9.34–11.14)
Chronic disease
 No 3425 1007 9.41 (8.83–10.00)
 Yes 1239 479 10.40 (9.56–11.25)
  1. aOwing to missing values, the strata may not add up to the total of n = 4677 participants
  2. bOnly those OTC drugs with clearly identifiable prices were considered for analysis