Table 3 Patterns of missing responses according to the order of questions on the questionnaire (N = 18 465)
From: Self-reported parkinsonian symptoms in the EPIC-Norfolk cohort
Order of 6 symptom questions | N (% of total) |
|---|---|
   Answered all | 11539 (62.5) |
   Answered none | 1196 (6.5) |
   Answered first question only | 2160 (11.7) |
   Missing one question only | 2219 (12.0) |
   Miscellaneous missing | 1351 (7.3) |