Table 2.

Association of a Recorded Penicillin Allergy on All-Cause Mortality

	Recorded penicillin allergy
	Yes	No
Number of patients	63,690	237,167
Follow-up time in years (mean ± SD)	6.0 ± 4.28	6.1 ± 4.26
Number of person-years	379,369	1,441,303
All-cause mortality
Number of deaths	8773	28,793
Age-, sex-, and entry time-matched HR (95% CI)	1.18 (1.15 to 1.21)	1.0 (reference)
Multivariable adjusted HR (95% CI)*	1.14 (1.12 to 1.17)	1.0 (reference)

*Age-, sex-, and entry time-matched and adjusted for age, sex, body mass index, socioeconomic status, smoking alcohol, Charlson Comorbidity Index, hemodialysis, antibiotic prescriptions, corticosteroid use, other antibiotic allergies, nursing home living, general practitioner visits, and hospitalizations

SD, standard deviation; HR, hazard ratio; CI, confidence interval