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Table 2 Data quality – missing data

From: Using mixed methods to select optimal mode of administration for a patient-reported outcome instrument for people with pressure ulcers

 

Self-completed (n = 49)

Administered (n = 21)

Total* (n = 70)

PU-QOLs with missing data

19 (38.8%)

3 (14.3%)

22 (31.4%)

Total number of PU-QOL items missed (range 1-87 items per PU-QOL)

619 (14.5%)

29 (1.6%)

648 (10.6%

Age

   

  Number under 70 years

(n = 12/25)+

(n = 2/14)+

(n = 14/39)+

  Number items missed

336 (15.5%)

3 (0.3%)

345 (10.2%)

  Number 70 years or older

(n = 7/24)+

(n = 1/7)+

(n = 8/31)+

  Number items missed

283 (13.6%)

26 (4.3%)

309 (11.5%)

Type of healthcare setting

   

  Number acute

(n = 16/26)+

(n = 2/12)+

(n = 18/38)+

  Number items missed

604 (26.7%)

28 (2.7%)

632 (19.1%)

  Number community

(n = 3/23)+

(n = 1/9)+

(n = 4/32)+

  Number items missed

15 (0.8%)

1 (0.1%)

16 (0.6%)

  1. +Refers to the number of patients with missing data versus the total number of patients in the respective subgroup.
  2. *A total of 70 PU-QOLs were returned and analysed (5 completed PU-QOLs were lost in the post).