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Table 2 Amount of missing data for outcome measures in the study, by interview, for patient interviews

From: Randomised controlled trial of a new palliative care service: Compliance, recruitment and completeness of follow-up

Interview and type (long or shorter)

potential n interviews

Total n items/questions within interviews

N patients (%) with complete data

Total n missing items

% Missing items

Mean (SD) missing items

Median missing items

Min

Max

Baseline

52

69

28 (54%)

288

8.0%

5.5 (11.6)

0

0

56

I2

48

56

35 (72%)

357

12.8%

7.1 (17.5)

0

0

56

I3

50

56

42 (84%)

103

3.7%

2.1 (9.1)

0

0

56

I4

21(SI only)

56

18 (86%)

92

3.1%

4.4 (15.3)

0

0

56

Final

47

69

20 (95%)

69

4.8%

3.3 (15.1)

0

0

69

  1. Note: There were three outliers – a patient who could not complete questionnaire in any interview, three missed interviews – I2 (2) and I4 (1) because of patients being away/in-hospital. These are included in the above analysis. Analysis without these outliers reduces the missing data even further, especially the number of missing items as all questionnaire items were missing for these patients. Open response text fields are not included as these were for additional comments if individuals wished to make them