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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-1 1.63 (1.34, 1.98)** 1.33 (1.09, 1.63)** 1.62 (1.33, 1.97)**
 SMS-2 1.20 (1.00, 1.43)* reference 1.20 (1.01, 1.43)*
 Control-3 reference reference reference
Gender
 Male 1.25 (1.07, 1.45)* 1.28 (1.05, 1.56)* 1.19 (0.99, 1.44) 1.24 (1.04, 1.48)*
 Female reference Reference reference Reference
Age 1.02 (1.01, 1.03)** 1.01 (1.00, 1.03)* 1.03 (1.02, 1.04)** 1.02 (1.10, 1.03)**
Donation history 1.06 (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