Table 6

Correlates of treatment approaches among Caucasian Americans with radiographic-confirmed knee osteoarthritis (N = 2075)
CAM Only Conventional Medication Only Both
(N = 502) (N = 303) (N = 493)
Odds ratios (95% confidence intervals)
Age ≥ 65 years 1.07 (0.82–1.38) 0.98 (0.72–1.34) 1.10 (0.83–1.45)
Women 1.67 (1.30–2.15) 1.54 (1.14–2.08) 2.36 (1.79–3.11)
Education
 ≥ Some college 1.81 (1.23–2.67) 0.89 (0.60–1.32) 1.25 (0.85–1.83)
 ≤High school or less 1.0 1.0 1.0
Income ($)
 >100,000 0.86 (0.61–1.22) 1.15 (0.76–1.75) 1.47 (1.02–2.12)
 50,000–100,000 0.83 (0.62–1.11) 0.97 (0.68–1.37) 0.97 (0.70–1.33)
 ≤ 50,000 1.0 1.0 1.0
KOOS Pain 1.09 (0.90–1.33) 0.78 (0.63–0.97) 0.75 (0.62–0.91)
KOOS Quality of Life 0.69 (0.57–0.83) 0.87 (0.69–1.09) 0.59 (0.48–0.73)
Kellgren-Lawrence grade: 1.62 (1.18–2.24) 1.45 (1.00–2.11) 1.90 (1.37–2.65)
4 versus 2 or 3
Symptom-related multi-joint osteoarthritis 1.43 (1.11–1.85) 1.67 (1.21–2.30) 2.43 (1.79–3.29)
History of knee injury/surgery 1.40 (1.09–1.81) 1.27 (0.93–1.72) 1.06 (0.80–1.39)
SF-12 Physical Health Score 0.98 (0.84–1.15) 0.68 (0.57–0.81) 0.75 (0.64–0.88)
Obesity 1.14 (0.89–1.47) 0.78 (0.58–1.05) 1.10 (0.84–1.44)

Reference group includes participants who did not report use of CAM or conventional medications for osteoarthritis treatment.

Odds ratios are per one standard deviation change in SF-12 Physical Health Score (SD = 8.7) and KOOS subscales of Pain (SD = 18.1) and Quality of life (SD = 22.1).

Yang et al.

Yang et al. BMC Complementary and Alternative Medicine 2012 12:86   doi:10.1186/1472-6882-12-86

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