Table 2.

History of blood transfusion, with odds ratios for developing Creutzfeldt-Jakob disease if having received blood transfusion

Study (year)	Subjects	Cases			Controls		Odds ratio (95% CI)
		Yes	No		Yes	No
Kondo et al, 19823	163	1	59		3	100	0.56 (0.06 to 5.56)
Harries-Jones et al, 19884	276	15	77		37	147	0.77 (0.40 to 1.50)
Esmonde et al, 19935	402	21	134		46	201	0.68 (0.39 to 1.20)
Van Dujin et al, 19986	719	38	303		71	307	0.54 (0.35 to 0.83)*
Collins et al, 19997	919	27	118		158	616	0.89 (0.57 to 1.40)†

^*Results of matched analyses: 0.56 (0.37 to 0.97). 

^†Results of matched analyses: 0.89 (0.57 to 1.40).