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Table 1 Age-specific KOOS scores given as mean, standard deviation, median, (95%CI of the mean) for men (M) and women (W).

From: Knee complaints vary with age and gender in the adult population. Population-based reference data for the Knee injury and Osteoarthritis Outcome Score (KOOS)

KOOS subscales Mean score, SD, median (95%CI of the mean) in different groups
  18–34 35–54 55–74 75–84
  M W M W M W M W
Pain N = 60 N = 74 N = 78 N = 80 N = 88 N = 85 N = 34 N = 33
  92.2 92.1 87.4 88.8 87.7 78.6 83.5 87.1
  11.2 14.0 17.9 18.7 17.4 25.5 23.3 18.2
  97.2 97.2 97.2 97.2 97.2 91.7 94.4 96.9
  (89.8–95.6) (88.8–95.3) (83.4–91.5) (84.6–93.0) (84.0–91.4) (73.1–84.1) (75.3–91.6) (80.6–93.5)
Symptoms N = 60 N = 74 N = 78 N = 82 N = 88 N = 85 N = 36 N = 34
  87.2 89.1 86.5 89.5 88.4 77.1 83.7 88.1
  13.9 13.5 16.7 14.6 17.3 24.8 19.0 14.2
  92.9 92.9 92.9 95.8 96.4 85.7 87.5 94.6
  (83.6–90.8) (86.0–92.2) (82.7–90.2) (86.2–92.7) (84.8–92.1) (71.7–82.4) (77.3–90.1) (83.1–93.0)
ADL N = 60 N = 74 N = 78 N = 80 N = 88 N = 85 N = 36 N = 34
  94.2 95.2 89.1 88.6 86.3 77.4 76.1 82.7
  10.0 11.6 17.6 19.7 18.8 26.2 24.8 19.5
  100 100 100 98.5 97.1 91.2 83.1 91.9
  (91.6–96.7) (92.5–97.8) (85.1–93.1) (84.2–92.9) (82.3–90.3) (78.8–83.1) (67.7–84.5) (75.9–89.6)
Sport/Rec N = 60 N = 74 N = 76 N = 80 N = 87 N = 84 N = 35 N = 34
  85.1 86.4 76.0 79.3 72.6 61.0 56.3 55.9
  20.8 21.1 29.5 27.7 29.9 36.9 34.7 37.3
  92.5 95.0 87.5 90.0 80 70.0 55.0 62.5
  (79.7–90.5) (81.5–91.3) (69.2–82.7) (73.1–85.4) (66.2–78.9) (53.0–69.0) (44.4–68.3) (42.9–68.9)
QOL N = 59 N = 74 N = 78 N = 80 N = 88 N = 85 N = 35 N = 33
  85.3 83.6 77.7 83.4 78.9 68.6 71.1 75.4
  19.2 20.2 25.4 22.0 25.4 31.4 29.0 26.9
  93.8 87.5 87.5 93.8 87.5 75.0 75.0 83.3
  (80.3–90.3) (78.9–88.3) (72.0–83.5) (78.5–88.3) (73.5–84.3) (61.8–75.4) (61.1–81.0) (65.9–85.0)