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Table 3 Incidence rates of fractures for study population, by anatomic site and sex

From: Risk of osteoporotic fracture in a large population-based cohort of patients with rheumatoid arthritis

Anatomic site

RA patients

Non-RA patients §

 
 

Fractures, n

Person-years

IR

(95% CI)

Fractures, n

Person-years

IR

(95% CI)

RR †

(95% CI)

All

       

   Wrist

234

92,167

2.5

(2.2-2.9)

1,088

492,138

2.2

(2.1-2.3)

1.15

(1.0-1.32)

   Humerus

143

92,326

1.6

(1.3-1.8)

498

493,117

1.0

(0.9-1.1)

1.53

(1.27-1.84)

   Hip

311

92,161

3.4

(3-3.7)

1,027

492,569

2.1

(2-2.2)

1.62

(1.43-1.84)

   Pelvis

304

92,100

3.3

(2.9-5.7)

804

492,735

1.6

(1.5-1.7)

2.02

(1.77-2.30)

   Any site

872

91,314

9.6

(8.9-10.2)

3,096

488,929

6.3

(6.1-6.6)

1.51

(1.40-1.63)

Women

       

   Wrist

197

67,533

2.9

(2.5-3.3)

933

357,899

2.6

(2.4-2.8)

1.12

(0.96-1.31)

   Humerus

130

67,646

1.9

(1.6-2.3)

432

358,719

1.2

(1.1-1.3)

1.60

(1.32-1.95)

   Hip

253

67,535

3.8

(3.3-4.2)

873

358,252

2.4

(2.3-2.6)

1.54

(1.34-1.77)

   Pelvis

267

67,449

4.0

(3.5-4.4)

700

358,388

2.0

(1.8-2.1)

2.03

(1.76-2.34)

   Any site

742

66,785

11.1

(10.3-11.9)

2,653

355,094

7.5

(7.2-7.8)

1.49

(1.37-1.62)

Men

       

   Wrist

37

24,634

1.5

(1.0-2.0)

155

134,239

1.2

(1.0-1.3)

1.30

(0.91-1.86)

   Humerus

13

24,680

0.5

(0.2-0.8)

66

134,398

0.5

(0.4-0.6)

1.08

(0.60-1.96)

   Hip

58

24,626

2.4

(1.8-3.0)

154

134,317

1.2

(1.0-1.3)

2.05

(1.52-2.77)

   Pelvis

37

24,651

1.5

(1.0-2.0)

104

134,346

0.8

(0.6-0.9)

1.95

(1.34-2.84)

   Any site

130

24,530

5.3

(4.4-6.2)

443

133,835

3.3

(3.0-3.6)

1.60

(1.32-1.95)

  1. Rates are shown per 1,000 person-years. †, unadjusted. §, 1:5 matched on age and sex. CI, confidence interval; IR, incidence rates;. RR, rate ratio.