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Table 2 Demographic and clinical variables stratified by age group

From: Younger age is associated with greater pain expression among patients with knee or hip osteoarthritis scheduled for a joint arthroplasty

  ≥65 years of age (n = 64) < 65 years of age (n = 44) p-value All (n = 108)
Joint, no (%)
 Knee OA 31 (53) 27 (47) n.s. 58 (53.7)
 Hip OA 33 (66) 17 (34)   50 (46.3)
Sex, no (%)
 Women 40 (55) 32 (45) n.s. 72 (66.7)
 Men 24 (66.6) 12 (33.3)   36 (33.3)
Age, mean (SD) 72 (5.1) 58 (5.1)   66.3 (8.5)
BMI, mean (SD) 27.6 (4.0) 29.3 (5.2) n.s. 28.3 (4.6)
Analgesicsa, no (%)
 Daily analgesics 24 (39.3) 24 (55.8) 0.09 48 (46.2)
 Analgesics when needed 26 (42.6) 15 (34.9)   41 (39.4)
 No analgesics 11 (18) 4 (9.3)   15 (14.4)
Kellgren & Lawrence modified classification of OA, no (%)
 3a 4 (6.3) 3 (6.8) 0.03 7 (6.5)
 3b 12 (18.8) 16 (36.4)   28 (25.9)
 4a 15 (23.4) 13 (29.5)   28 (25.9)
 4b 33 (51.6) 12 (27.3)   45 (41.7)
POM VASb, mean (SD) 37 (21) 40 (24) n.s. 38 (22.6)
POM-Words
 Words, no (%) Troublesome (O) 47 (73.4) 40 (90.9) 0.03 87 (80.6)
Excruciating (V) 5 (7.8) 10 (22.7) 0.045 15 (13.9)
 Number, median (range) Sensory words 2 (0–7) 3 (1–6) n.s. 2 (0–7)
Affective words 2 (1–7) 3 (1–9) 0.02 2 (1–9)
 Intensity score, median (range) Sensory words 6 (0–24) 8 (2–20) 0.05 7 (0–24)
Affective words 5.5 (2–27) 8 (3–39) 0.008 6 (2–39)
KOOS/HOOS, mean (SD)
 Pain 46 (14) 41 (14) n.s. 44 (14)
 Symptoms 46 (19) 38 (16) 0.03 43 (18)
 ADL 52 (15) 50 (18) n.s. 51 (16)
 Sports and recreation 22 (18) 16 (18) n.s. 20 (18)
 QoL 25 (16) 24 (12) n.s. 25 (15)
EQ-5D VAS 65 (22) 61 (19) n.s. 63 (21)
  1. a Data missing for 4 patients b Data missing for 1 patient
  2. OA Osteoarthritis, POM Pain-o-Meter, VAS Visual analogue scale, KOOS Knee Injury and Osteoarthritis Outcome Score, HOOS Hip Disability and Osteoarthritis Outcome Score, EQ-5D VAS EuroQol 5 Dimensions visual analogue scale, N.s non-significant