. 2016 Jul 12;15(5):405–412. doi: 10.2450/2016.0023-16

Table II.

Odds ratios with 95% confidence intervals for associations of mean haemoglobin and systolic blood pressure (SBP, both from last 3 donations) and of body mass index (BMI) and estimated blood volume with pre-, and positive and negative post-donation symptoms.

Pre-donation symptoms

		Overall	Lack of energy	Headache	Other
Haemoglobin	Men	1.17 (0.96 to 1.42)	1.10 (0.81 to 1.50)	0.98 (0.70 to 1.36)	1.27 (0.92 to 1.75)
	Women	1.42^a (1.14 to 1.78)	1.18 (0.86 to 1.61)	1.62^a (1.12 to 2.32)	1.85^a (1.22 to 2.81)

SBP	Men	1.01^a (1.00 to 1.02)	1.00 (0.99 to 1.01)	1.01 (0.99 to 1.02)	1.02^a (1.01 to 1.04)
	Women	1.02^a (1.01 to 1.02)	1.02^a (1.01 to 1.03)	1.01 (1.00 to 1.03)	1.00 (0.99 to 1.02)

BMI	Men	1.09^a (1.06 to 1.13)	1.05 (1.00 to 1.11)	1.13^a (1.07 to 1.19)	1.12^a (1.06 to 1.18)
	Women	1.07^a (1.05 to 1.10)	1.09^a (1.05 to 1.12)	1.09^a (1.05 to 1.13)	1.03 (0.99 to 1.09)

Blood volume	Men	1.35^a (1.10 to 1.65)	1.15 (0.83 to 1.60)	1.30 (0.92 to 1.83)	1.66^a (1.19 to 2.32)
Blood volume	Women	1.57^a (1.27 to 1.94)	1.69^a (1.26 to 2.25)	1.70^a (1.22 to 2.38)	1.48 (0.98 to 2.22)

Positive post-donation symptoms

		Overall	Feeling fit	Less head ached	Other

Haemoglobin	Men	1.10 (0.95 to 1.28)	1.00 (0.80 to 1.24)	0.61 (0.17 to 2.24)	1.19 (0.85 to 1.67)
	Women	1.57^a (1.32 to 1.88)	1.53^a (1.17 to 1.99)	1.55 (0.49 to 4.85)	1.49^a (1.07 to 2.09)

SBP	Men	1.02^a (1.01 to 1.02)	1.02^a (1.01 to 1.03)	1.02 (0.98 to 1.07)	1.01 (0.99 to 1.02)
	Women	1.01^a (1.01 to 1.02)	1.01^a (1.00 to 1.02)	1.05^a (1.01 to 1.09)	1.02^a (1.01 to 1.03)

BMI	Men	1.06^a (1.03 to 1.08)	1.10^a (1.06 to 1.14)	1.05 (0.85 to 1.31)	1.02 (0.96 to 1.09)
	Women	1.07^a (1.05 to 1.09)	1.07^a (1.04 to 1.10)	1.11^a (1.00 to 1.22)	1.09^a (1.06 to 1.13)

Blood volume	Men	1.22^a (1.05 to 1.43)	1.39^a (1.12 to 1.73)	0.50 (0.12 to 2.10)	1.14 (0.79 to 1.64)
Blood volume	Women	1.57^a (1.32 to 1.86)	1.44^a (1.12 to 1.86)	1.66 (0.61 to 4.51)	1.58^a (1.16 to 2.17)

Negative post-donation symptoms

		Overall	Lack of energy	Dizzy	Other

Haemoglobin	Men	0.88^a (0.78 to 1.00)	0.92 (0.78 to 1.08)	0.97 (0.73 to 1.28)	0.82 (0.44 to 1.55)
	Women	0.93 (0.85 to 1.03)	0.91 (0.80 to 1.02)	0.85^a (0.73 to 0.97)	1.07 (0.78 to 1.47)

SBP	Men	0.99^a (0.98 to 0.99)	1.00 (0.99 to 1.00)	0.98^a (0.97 to 0.99)	0.99 (0.97 to 1.02)
	Women	0.99^a (0.99 to 0.99)	0.99^a (0.99 to 1.00)	0.98^a (0.98 to 0.99)	0.99 (0.98 to 1.01)

BMI	Men	0.91^a (0.89 to 0.94)	0.95^a (0.92 to 0.98)	0.88^a (0.83 to 0.93)	1.04 (0.94 to 1.16)
	Women	0.93^a (0.92 to 0.94)	0.93^a (0.91 to 0.94)	0.91^a (0.89 to 0.93)	0.98 (0.95 to 1.02)

Blood volume	Men	0.71^a (0.62 to 0.81)	0.78^a (0.66 to 0.93)	0.65^a (0.49 to 0.88)	0.76 (0.39 to 1.45)
Blood volume	Women	0.63^a (0.57 to 0.70)	0.61^a (0.54 to 0.69)	0.58^a (0.50 to 0.67)	1.03 (0.77 to 1.38)

p<0.05.

Adjusted for age, smoking, donation frequency, total number of donations, and donation type.