Skip to main content

Table 2 Medication use during the 30 days prior to baseline, according to baseline demographic and clinical factors

From: How do people with knee osteoarthritis use osteoarthritis pain medications and does this change over time? Data from the Osteoarthritis Initiative

    Medication type used within 30 days of baseline
Variable    Analgesic(s) Nutraceutical(s)
   n Prescription; any use reported Prescription or OTC; frequent use reported Frequent use reported
Sex Male 435 25.3%** 39.3%** 42.8%
  Female 552 33.9%** 54.5%** 40.2%
Race White 701 28.7% 45.2%* 47.9%**
  Non-white 286 33.6% 54.2%* 25.2%**
Age <65 594 29.6% 46.6% 40.9%
  65 to 74 312 29.5% 48.7% 44.2%
  >74 81 35.8% 53.1% 33.3%
KL grade 2 378 27.0% 43.9% 35.7%**
  3 442 31.7% 50.0% 41.0%**
  4 167 32.9% 50.9% 55.1%**
Pain NRS 0 to 3 233 22.7%** 32.6%** 47.6%*
  4 to 7 535 29.5%** 47.9%** 41.7%*
  8 to 10 219 39.3%** 63.9%** 33.8%*
Co-morb Absent 696 28.7% 45.8% 45.7%**
  Present 291 33.3% 52.6% 30.9%**
BMI <26 129 27.1%* 44.2%** 48.8%**
  26 to 30 381 26.2%* 42.3%** 45.4%**
  >30 477 34.0%* 53.2%** 36.1%**
  1. BMI, body mass index kg/m2; Co-morb, co-morbidity; KL, Kellgren-Lawrence; NRS, numerical rating scale; OTC, over the counter. Unadjusted comparison significant at *P <0.05 or **P <0.01.