TABLE II.

Association Between Selected Infections with Childhood Rhabdomyosarcoma

Infection	Total N (%)	Controls N (%)	Cases N (%)	OR	95% CI	ORa	95% CI
Chickenpox
No	326 (51.3)	152 (48)	174 (54.7)	1.00	Ref.	1.00	Ref.
Yes	309 (48.7)	165 (52)	144 (45.3)	0.71	0.49-1.04	0.71	0.48-1.04
Mumps
No	604 (94.8)	299 (94.6)	305 (95)	1.00	Ref.	1.00	Ref.
Yes	33 (5.2)	17 (5.4)	16 (5)	0.75	0.35-1.59	0.69	0.31-1.52
Pneumonia
No	565 (88)	284 (88.8)	281 (87.3)	1.00	Ref.	1.00	Ref.
Yes	77 (12)	36 (11.3)	41 (12.7)	1.17	0.72-1.90	1.25	0.75-2.09
Scarlet Fever
No	624 (97.7)	310 (97.8)	314 (97.5)	1.00	Ref.	1.00	Ref.
Yes	15 (2.4)	7 (2.2)	8 (2.5)	1.00	0.35-2.85	0.99	0.34-2.85
Rubella
No	576 (91.6)	284 (91)	292 (92.1)	1.00	Ref.	1.00	Ref.
Yes	53 (8.4)	28 (9)	25 (7.9)	0.85	0.49-1.49	0.80	0.45-1.42
Rubeola
No	613 (96.7)	304 (96.2)	309 (97.2)	1.00	Ref.	1.00	Ref.
Yes	21 (3.3)	12 (3.8)	9 (2.8)	0.75	0.32-1.78	0.83	0.32-2.10
Pertussis
No	634 (99.5)	318 (99.7)	316 (99.4)	1.00	Ref.	1.00	Ref.
Yes	3 (0.5)	1 (0.3)	2 (0.6)	2.00	0.18-22.01	2.45	0.21-28.21
Mononucleosis
No	637 (99.1)	319 (99.4)	318 (98.8)	1.00	Ref.	1.00	Ref.
Yes	6 (0.9)	2 (0.6)	4 (1.2)	2.00	0.37-10.9	2.29	0.41-12.82
Lung infections
No	546 (85.2)	263 (82.4)	283 (87.9)	1.00	Ref.	1.00	Ref.
Yes	95 (14.8)	56 (17.6)	39 (12.1)	0.64	0.40-1.01	0.65	0.40-1.04

Abbreviations: OR=odds ratio; CI=confidence interval. Cases and controls pair matched on race, sex, and age

^aAdjusted for maternal education and total annual income (cases and controls pair matched on race, sex, and age)