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Table 4 Logistic regression analysis of associations of groups and donor characteristics with donor reactivation among those who were successfully contacted

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-11.63 (1.34, 1.98)**1.33 (1.09, 1.63)**1.62 (1.33, 1.97)**
 SMS-21.20 (1.00, 1.43)*reference1.20 (1.01, 1.43)*
 Control-3referencereferencereference
Gender
 Male1.25 (1.07, 1.45)*1.28 (1.05, 1.56)*1.19 (0.99, 1.44)1.24 (1.04, 1.48)*
 FemalereferenceReferencereferenceReference
Age1.02 (1.01, 1.03)**1.01 (1.00, 1.03)*1.03 (1.02, 1.04)**1.02 (1.10, 1.03)**
Donation history1.06 (1.04, 1.08)**1.10 (1.06, 1.13)**1.05 (1.03, 1.07)**1.06 (1.04, 1.08)**
  1. Coding: Telephone call = 1, SMS = 2, Control = 3; Male = 1, Female = 2
  2. *: P < 0.05; **: P < 0.001