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Table 2 Proportion of knee complaints among floor layers and graphic designers from the initial study sample, stratified into age groups

From: Clinical knee findings in floor layers with focus on meniscal status

  Floor layers Graphic designers
  Attendees Non-attendees    Attendees Non-attendees   
Age groups N§ n||| (%) N§ n||| (%) RR 95% CI N§ n||| (%) N§ n||| (%) RR 95% CI
≤ 49 years 43 23 (53) 45 19 (42) 1.27 0.82–1.97 7 4 (57) 22 5 (23) 2.51 0.92–6.85
50–59 years 72 41 (57) 23 9 (39) 1.46 0.84–2.52 73 23 (32) 42 8 (19) 1.65 0.81–3.36
≥ 60 years 19 6 (32) 29 12 (41) 0.76 0.35–1.68 40 19 (48) 74 12 (16) 2.93 1.59–5.40
  1. Risk ratio (RR) with 95% confidence interval (CI) among those who agreed to attend the medical examination compared to those who declined.
  2. Floor layers (n = 134), graphic designers (n = 120)
  3. Floor layers (n = 97), graphic designers (n = 138)
  4. § Total in each age group
  5. |||Knee complaints during the past 12 months