Table 4 Attrition analysis comparing non-participants to the study population, differences in distributions analysed with the chi-squared test

Sex

Men

347

44.9

805

45.7

0.762

Women

425

55.1

958

54.3

0.762

Age, decade

60

314

40.7

979

55.5

<0.001

70

147

19.0

350

19.9

0.664

80

222

28.8

379

21.5

<0.001

90

89

11.5

55

3.1

<0.001

Risk factors

Medical and psychological

Heart disease

204/766

26.6

387/1759

22.0

0.012

Heart failure with symptoms

97/740

13.1

91/1712

5.3

<0.001

Stroke

98/771

12.7

135/1758

7.7

<0.001

Chronic obstructive pulmonary disease

39/769

5.1

36/1762

2.0

<0.001

Diabetes. type 1

11/766

1.4

11/1757

0.6

0.044

Osteoporosis-related fracture

119/765

15.6

174/1756

9.9

<0.001

Hip fracture

27/760

3.6

31/1742

1.8

0.007

Osteoarthritis of hip and/or knee

152/772

19.7

316/1763

17.9

0.292

Dementia

52/733

7.1

37/1701

2.2

<0.001

Epilepsy

13/769

1.7

14/1755

0.8

0.045

Parkinson’s disease

11/764

1.4

6/1757

0.3

0.002

Anaemia

90/719

12.5

100/1703

5.9

<0.001

Depression

135/758

17.8

301/1728

17.4

0.813

Psychosis and other mental illness

18/768

2.3

41/1750

2.3

0.999

Cognitive impairment

127/695

18.3

139/1715

8.1

<0.001

Sleeping disorders

317/772

41.1

660/1760

37.5

0.090

Medication use

Sedative and hypnotic drugs

158/630

25.1

249/1283

19.4

0.004

Neuroleptic drugs

17/630

2.7

16/1283

1.2

0.022

Anticholinergic drugs

34/630

5.4

45/1283

3.5

0.051

Antihypertensive drugs

85/630

13.5

150/1283

11.7

0.259

Diuretic drugs

286/630

45.4

394/1283

30.7

<0.001

Use of fall risk drugs

393/772

50.9

635/1763

36.0

<0.001

Use of other drugs

237/772

30.7

648/1763

36.8

0.003

Sensory and neuromuscular

Vertigo

276/772

35.8

572/1763

32.4

0.104

Current pain

418/760

55.0

965/1742

55.4

0.855

Urine incontinence

149/690

21.6

267/1720

15.5

<0.001

Nocturia

74/690

10.7

103/1720

6.0

<0.001

Balance and mobility

Tendency to fall

121/771

15.7

174/1762

9.9

<0.001

Pain during movement

441/764

57.7

1037/1763

58.8

0.607

Impaired mobility

153/700

21.9

154/1730

8.9

<0.001

Low walking speed

372/617

60.3

728/1669

43.6

<0.001

Low physical activity

238/717

33.2

293/1739

16.8

<0.001

Environmental and sociodemographic

Living alone

347/772

44.9

695/1763

39.4

0.009

Residential home

28/727

3.9

19/1744

1.1

<0.001

Outdoor adaptation

496/648

76.5

1204/1578

76.3

0.902

Indoor adaptation

275/772

35.6

483/1763

27.4

<0.001

Functional ability

Dependence in iADL

93/686

13.6

169/1714

9.9

0.009

Dependence in pADL

222/686

32.4

390/1714

22.8

<0.001