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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-10.92 (0.76, 1.11)1.10 (0.93, 1.31)0.80 (0.55, 1.00)
 SMS-20.83 (0.66, 1.04)reference1.17 (0.89, 1.55)
 Control-3referencereferencereference
Gender
 Male1.14 (0.99, 1.31)1.13 (0.96, 1.33)1.10 (0.93, 1.30)1.20 (1.02, 1.41)*
 Femalereferencereferencereferencereference
Age1.03 (1.02, 1.04)**1.03 (1.02, 1.04)**1.03 (1.02, 1.04)**1.03 (1.02, 1.04)**
Donation history1.08 (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
 Successful1.56 (1.30, 1.88)**1.56 (1.29, 1.88)**2.01 (1.60, 2.55)**1.02 (0.77, 1.35)
 Failedreferencereferencereferencereference
  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