Table 3.

Knowledge-Related Influencing Factors of Blood Donation Practice Among Health Care Providers of Public Hospitals, Bahir Dar City, Ethiopia, July 2022 (n = 491)

Variables	Category	Control %	Case %	x²
				Pearsons x2	df	P value
Criteria for donating blood	Being voluntary
	No	30.7	27.64	0.41	1	0.521
	Yes	69.3	72.36
	Age 18–65 yrs
	No	45.4	41.46	0.57	1	0.449
	Yes	54.62	58.54
	Weight >45kg
	No	41.66	35.77	1.29	1	0.256
	Yes	58.42	64.23
	Good health
	No	38.86	40.65	0.12	1	0.725
	Yes	61.14	59.35
Minimum interval can a person donate blood	Inaccurate respond	28.53	15.45	8.36	1	0.004
	Every 3 month	71.5	84.55
How much blood should be once donated by a donor?	Inaccurate respond	29.89	30.89	0.04	1	0.834
	<500mL	70.1	69.1
When this amount of donated blood volume is substitute in the body	Inaccurate respond	65.22	59.35	1.37	1	0.241
	24–48hrs	34.78	40.65
How much time is required for the blood donation process?	Inaccurate respond	62.22	70.73	2.91	1	0.088
	<20min	37.77	29.27
Health benefits of blood donation	Free medical checkup
	No	64.13	7.32	119.02	1	0.000
	Yes	35.87	93.68
	Happiness
	No	27.98	26.82	0.62	1	0.803
	Yes	72.01	73.17
	Control weight
	No	57.06	60.2	0.36	1	0.547
	Yes	42.93	39.84
	Lower cancer risk
	No	62.23	53.67	2.82	1	0.093
	Yes	37.77	46.34
	Reduce heart attack
	No	58.97	62.60	0.51	1	0.477
	Yes	41.03	37.4
Can blood be artificially manufactured?	Yes	13.86	21.14	3.69	1	0.055
	No	86.14	78.86
Overall, Knowledge	Inadequate	54.61	44.71	3.62	1	0.057
	Adequate	45.38	55.28