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Table 2 Number (%) of EQ5D scores at each follow up point

From: Simple imputation methods were inadequate for missing not at random (MNAR) quality of life data

  Month of assessment
  4 12 24 36 48
EQ5D score (no reminder) 2908 (59) 2648 (62) 2511 (67) 1670 (69) 661 (69)
EQ5D score (after reminder) 999 (20) 840 (20) 693 (18) 406 (17) 162 (17)
Not returned 1042 (21) 763 (18) 561 (15) 338 (14) 138 (14)
Total sent 4949 (100) 4251 (100) 3765 (100) 2414 (100) 961 (100)
Total available for follow up 5292 5292 5292 3663 1629
Not Sent 343 (6) 1041 (20) 1527 (29) 1249 (34) 668 (41)
Proportion of responders who did so by reminder 26% 24% 22% 20% 20%