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Table 3 Logistic regression analysis of associations of groups, donor characteristics, and intervention status with re-donation among all participants

From: Effective methods for reactivating inactive blood donors: a stratified randomised controlled study

 

OR (95% CI)

1 vs. 2 vs. 3

OR (95% CI)

1 vs. 2

OR (95% CI)

1 vs 3

OR (95% CI)

2 vs. 3

Group

 Telephone call-1

0.92 (0.76, 1.11)

1.10 (0.93, 1.31)

0.80 (0.55, 1.00)

–

 SMS-2

0.83 (0.66, 1.04)

reference

–

1.17 (0.89, 1.55)

 Control-3

reference

–

reference

reference

Gender

 Male

1.14 (0.99, 1.31)

1.13 (0.96, 1.33)

1.10 (0.93, 1.30)

1.20 (1.02, 1.41)*

 Female

reference

reference

reference

reference

Age

1.03 (1.02, 1.04)**

1.03 (1.02, 1.04)**

1.03 (1.02, 1.04)**

1.03 (1.02, 1.04)**

Donation history

1.08 (1.06, 1.10)**

1.11 (1.08, 1.13)**

1.07 (1.05, 1.09)**

1.06 (1.04, 1.08)**

Status of interventiona

 Successful

1.56 (1.30, 1.88)**

1.56 (1.29, 1.88)**

2.01 (1.60, 2.55)**

1.02 (0.77, 1.35)

 Failed

reference

reference

reference

reference

  1. Coding: Telephone call = 1, SMS = 2, Control = 3; Male = 1, Female = 2; Status of intervention (Successful) =1, (Failed/Control) = 2
  2. a: Referred to those who accepted the interventions successfully; *: P < 0.05; **: P < 0.001