Variables Alternatives Voluntary blood donation practice COR [95% CI] AOR [95% CI]
    Yes No      
Sex Male 78   329 1.16(0.75-1.82) -
Female 34   167 1 -
Age 18-20 years 37   173 3.90(1.57-9.69)* 6.14 (1.82-20.69)*
21-23 years 58   294 3.99(1.65-9.62)* 6.49 (2.04-20.64)*
≥24 years 17   29 1 1
Year of study I 26   136 0.48(0.16-1.44) 0.20 (0.05-0.82)*
II 37   151 0.37(0.13-1.10) 0.15 (0.04-0.57)*
III 32   124 0.35(0.12-1.05) 0.16 (0.04-0.62)*
IV 13   40 0.28(0.08-0.93)* 0.15 (0.04-0.65)*
V 4   44 1 1
Can a person donate      blood more than one Yes 484   18 1.97(1.04-3.74)* 0. .85 (0.40-1.79)
No 92   15 1 1
Having willingness to donate blood in the future Yes 475   15 16.98(4.08-69.03)* 5.88 (1.36-25.43)*
No 100   18 1 1
 I am in full of fear to donate blood Agree 224   15 1 1
Neutral 97   5 0.43 (0.23-0.82)* 0.47 (0.24-0.92)*
Disagree 254   13 0.33(0.20-0.55)* 0.43 (0.25-0.74)*
Do you encourage relatives to donate? Yes 459   16 3.31(1.68-6.54)* 1.07 (0.49-2.36)
No 114   17 1 1
Being Willingness to donate if  reminded to do so Yes 378   11 0.44 (0.19-1.00)* 0.71 (0.28-1.74)*
No 152   15 4.93 (1.50-16.26)* 5.32 (1.53-18.56)*
No response 46   7 1 1
Knowledge of voluntary blood     Good knowledge 277   1 1.54 (1.02-2.32)* 1.01 (0.62-1.65)
donation    Poor knowledge 299   32 1 1
Attitude toward voluntary blood Favorable 86   289 2.43 (1.50-3.92)* 1.77 (1.04-6.57)*
donation Unfavorable 25   204 1 1
Table 3: Association of factors with voluntary blood donation among Madawalabu University, May, 2015. *P-value <0.05.