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Table 1 Proportion of missing data within the 61 studies with QoL outcomes

From: A review of RCTs in four medical journals to assess the use of imputation to overcome missing data in quality of life outcomes

 

Number of Studies

Proportion of

missing data

No imputation

Imputation

Total

None

6

0

6

< 10%

16

5

21

11–20%

6

5

11

>20%

8

3

11

Unclear

6

6

12

Total

42

19

61