TABLE 1.

Reports of delaying donation and taking iron supplements in the letter group subsets^*

Variable	Control letter and iron ≥26 ng/mL in the Iron Status Group, N = 114		Iron <26 ng/mL in the Iron Status Group, N = 71		p value†
	No.	%	No.	%
Delayed donation
No	81	80.2	47	68.1	0.27
Yes	20	19.8	22	31.9
Total	101	100.0	69	100.0
Took iron
No	98	89.1	30	42.9	< 0.0001
Yes	12	10.9	40	57.1
Total	110	100.0	70	100.0

^*Note that some columns sum to less than expected because of items that were missing data.

^†Log-linear model test of difference in proportions between letter group subsets.