Blood Donors’ Age, Haemoglobin Type, G6PD Status, and Blood Group Impact Storability of CPDA-1 Banked Whole Blood: A Repeated-Measure Cohort Study in Cape Coast, Ghana

Table 3

Stratification based on the qualitative G6PD status.

Variable	Days					value
	Day 0	Day 7	Day 14	Day 21	Day 35
Plasma K+ levels
G6PDd	4.050	9.720	13.750	16.710	23.820	<0.0001
G6PD normal	4.040	10.200	14.940	17.650	23.830	<0.0001
value	ns	ns	ns	ns	ns
Osmotic-induced lysis
G6PDd	ND	74.940	37.060	27.640	42.340	<0.0001
G6PD normal	ND	81.940	54.930	40.400	50.880	<0.0001
value		ns	ns	ns	0.0438
% free haemoglobin
G6PDd	ND	0.000	0.000	0.6440	0.980	<0.0001
G6PD normal	ND	0.000	0.000	0.590	0.880	<0.0001
value		ns	ns	ns	ns

ND means not determined; ns means not significant; median value significantly differed from day 0 (K+ levels), or day 7 (for osmotic fragility or % free haemoglobin); ns means not statistically significantly different; statistical significance was estimated per each G6PD status in relation to days of storage by means of Friedman’s repeated measure test with Dunn’s multiple correction; across the two G6PD stratification, statistical differences within each day were calculated using the Mann–Whitney test.