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Table 2 Fraction of missing information compared with the nominal amount of missing information

From: Alternative analyses for handling incomplete follow-up in the intention-to-treat analysis: the randomized controlled trial of balloon kyphoplasty versus non-surgical care for vertebral compression fracture (FREE)

 

Follow-up period

 

1 month

3 months

6 months

12 months

24 months

Outcome

FMI

MD

FMI

MD

FMI

MD

FMI

MD

FMI

MD

SF-36 PCS

11.9

15.7

15.8

22.3

17.2

23.7

23.9

27.7

30.1

30.0

EQ-5D

14.5

15.3

13.1

21.7

18.0

23.0

18.4

27.0

20.9

27.7

RMD

9.9

17.3

19.8

26.7

18.2

28.3

21.0

33.7

19.9

37.7

Back pain

12.3

12.7

15.7

18.7

19.0

20.3

17.3

25.3

29.6

25.0

Restricted activity

9.6

22.0

14.0

26.3

19.6

26.0

19.3

30.0

20.0

32.3

Days in bed

21.2

18.7

24.6

24.0

27.5

24.0

35.4

28.0

34.3

30.3

  1. Values shown are percentages
  2. EQ-5D, EuroQol 5-dimension; FMI, fraction of missing information; RMD, Roland-Morris Disability; SF-36 PCS, short form-36 physical component summary; MD, nominal amount of missing data in baseline and follow-up data