Table 2.

Use of ASA and Other Salicylates Among 373 Cases of SCAR and 1720 Controls According to Type of Preparation and Disease Classification.

Class	Drug	Type of preparation	Cases	Controls	Crude relative risk estimate	Multivariate relative risk estimate (95% confidence interval)
SJS	ASA	Single ingredient	12	92	1.6	1.2 (0.5,2.6)
		Combination	2	12	–	–
	Other salicylates	Single ingredient	3	26	1.4	1.4 (0.3,4.6)*
		Combination	1	3	–	–
Overlap	ASA	Single ingredient	7	92	1.3	1.7 (0.6,4.6)
SJS/TEN		Combination	4	12	5.7	3.6 (0.6,21)
	Other salicylates	Single ingredient	3	26	2.0	2.0 (0.4,6.6)*
		Combination	1	3	–	–
TEN	ASA	Single ingredient	12	92	2.1	1.5 (0.6,3.9)
		Combination	0	12	–	–
	Other salicylates	Single ingredient	2	26	–	–
		Combination	0	3	–	–

^*Crude estimate.