TABLE 2—

Risk of Occurrence of Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis, by Anthelmintic Drug Use

	Case Patients (n = 46), No.	Controls (n = 92), No.	Odds Ratio (95% Confidence Interval)
Pyrantel pamoate only			. . .
Yes	0	44
No	46	48
Mebendazole only			0.5 (0.1, 1.6)
Yes	6	19
No	40	73
Metronidazole only			1.8 (0.3, 8.6)
Yes	5	6
No	41	86
Mebendazole + metronidazole			9.5 (3.9, 23.9)*
Yes	35	23
No	11	69

*P < .001 (χ² test).