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Table 3 Observed and expected number of fractures at primary osteoporotic sites, and sites adjacent to the joints most commonly affected early in RA in the Barwon Statistical Division

From: Rheumatoid arthritis and incident fracture in women: a case–control study

 

Rheumatoid arthritis (cases)

Non-rheumatoid arthritis (controls)

Chi-square test

 

Observed

Expected

Observed

Expected

χ2value

p value

Primary osteoporotic sites

Vertebral

26

13.4

243

255.6

21.71

<0.001

Colles’

6

10.8

211

206.2

  

Hip

6

16.3

321

310.7

  

Other

44

41.5

788

790.5

  

Sites adjacent to joints most commonly affected early in RA

Colles’/Carpal/Hand/Fingers

9

14.8

288

282.2

3.02

0.22

Foot/Toes

4

4.2

81

80.8

  

Other

69

63.0

1,194

1200