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Table 1 Study characteristics

From: Improved prediction of fracture risk leveraging a genome-wide polygenic risk score

Characteristic

UK Biobank test dataset

MrOS US

MrOS Sweden

SOF

CKB

Mean/N

Missing/N

Mean/N

Missing/N

Mean/N

Missing/N

Mean/N

Missing/N

Mean/N

Missing/N

Sample size

80,014

 

4663

 

1880

 

3615

 

25,034

 

Baseline age (SD)

56.8 (8.0)

 

74.0 (6.0)

 

75.4 (3.2)

 

71.5 (5.3)

 

53.7 (11.0)

 

Women (%)

43,723 (54.6)

 

0

 

0

 

3615 (100)

 

14,334 (57.3)

 

Baseline BMI (SD)

27.3 (4.7)

4

27.4 (3.8)

1

26.4 (3.5)

 

26.7 (4.6)

 

23.7 (3.5)

 

Prior fracture (%)

8008 (10.0)

21

1087 (23.3)

4

637 (33.9)

1

1274 (35.4)

17

2290 (9.2)

 

Smoking (%)

6908 (8.6)

 

146 (3.1)

1

178 (9.5)

6

285 (7.9)

13

7957 (31.8)

 

Corticosteroids use (%)

923 (1.2)

 

98 (2.2)

164

34 (1.8)

6

387 (10.9)

62

 

25,034

Rheumatoid arthritis (%)

758 (1.0)

 

226 (4.8)

 

27 (1.5)

23

252 (7.1)

74

572 (2.3)

 

Parental fracture (%)

 

80,014

600 (16.8)

1098

164 (13.7)

686

424 (14.3)

646

 

25,034

At-risk drinking* (%)

 

80,014

182 (3.9)

6

52 (2.8)

27

102 (2.8)

1

 

25,034

Baseline falls§ (%)

 

80,014

984 (21.1)

 

298 (15.9)

6

1021 (28.3)

6

 

25,034

Secondary osteoporosis (%)

3352 (4.2)

  

4663

 

1880

 

3615

 

25,034

FRAX for MOF (SD)

5.1 (3.1)

 

9.5 (4.7)

1

13.1 (5.6)

 

18.7 (9.5)

   

FRAX for hip fracture (SD)

0.7 (0.9)

 

3.8 (3.8)

1

7.0 (4.9)

 

6.4 (7.0)

   

FRAX-gSOS for MOF (SD)

5.4 (3.9)

 

10.1 (6.0)

6

13.7 (7.3)

 

19.3 (11.2)

38

  

FRAX-gSOS for hip fracture (SD)

0.9 (1.2)

 

4.2 (4.8)

6

7.7 (6.5)

 

7.0 (8.1)

38

  

FRAX-BMD for MOF (SD)

4.9 (2.6)

75,273

8.1 (4.4)

2

11.1 (6.3)

19

17.1 (9.5)

151

  

FRAX-BMD for hip fracture (SD)

0.7 (1.0)

75,273

2.5 (3.3)

2

5.3 (5.5)

19

5.0 (6.7)

151

  

Incident major osteoporotic fracture (incidence proportion)

1189 (1.5)

 

560 (12.0)

 

337 (17.9)

 

707 (20.6)

 

323 (1.3)

 

Incident hip fracture (incidence proportion)

209 (0.3)

 

273 (5.9)

 

129 (6.9)

 

556 (15.6)

 

67 (0.3)

 
  1. *Though alcohol use is available in the UK Biobank and the CKB, no information regarding the frequency of drinking to determine at-risk drinking (≥ 3 drinks per day)
  2. §The UK Biobank only records self-reported falls in the past 12 months at the baseline visit