Table 3.

Number of previous donations and knowledge in donor students

Number of previous donations in the group	Number of donors in the group (N=500)	%	Mean ± SD	Range of marks
0	130	26.00	12.00±2.20	10–13
1	192	38.40	14.09±1.21*	13–16
2	94	18.80	15.92 ±1.26*	15–19
3	64	12.80	17.57 ±1.37*	17–20
4	20	4.00	20.20±0.76*	20–22

Notes:

^*P-value <0.05.

Abbreviation: SD, standard deviation.