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Table 1 The pattern of missingness for the primary trial outcome Y

From: An exploration of the missing data mechanism in an Internet based smoking cessation trial

  Treatment Control Total
  (tailored) (generic)  
Not abstained (Y = 0) 271 289 560
Abstained (Y = 1) 80 82 162
Missing Y 526 510 1036
Total 877 881 1758