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Table 2 Study descriptive statistics by treatment

From: The efficacy of duloxetine, non-steroidal anti-inflammatory drugs, and opioids in osteoarthritis: a systematic literature review and meta-analysis

Treatment

Total n

Mean age (yrs)

Mean percentage women

Mean duration of OA (yrs)

Duloxetine

383

65.00

73.25

7.48

Ibuprofen

423

61.80

71.86

7.44

Naproxen

1889

61.73

68.41

8.26a

Celecoxib

4681

61.63

65.60

6.58a

Etoricoxib

1137

62.41

72.12

6.78a

Tramadol

1507

60.60

62.67

7.95a

Oxycodone

398

58.73

60.27

NR

OROS hydromorphone

468

59.5b

67.97

NR

Placebo

6560

61.26b

66.97

6.78a

  1. anot all studies reported duration of OA; bone study did not report mean age; NR = not reported.