Table 3.

Epidemiologic background information in patients with systemic lupus erythematosus (SLE) and healthy controls (HC)

	SLE	HC	P
Interaction with pets (%)
SA-positive	16.7	20.0	NS
SA-negative	24.4	22.6
Contacts with other animals (%)
SA-positive	22.2	0	P < 0.0001 SLE SA-positive vs HC SA-positive
SA-negative	12.2	12.9	P = 0.0001 HC SA-negative vs HC SA-positive
Hospitalization within 90 days (%)
SA-positive	0	0	NS
SA-negative	1.5	0
Antibiotic treatment within 90 days (%)
SA-positive	16.7	10.0
SA-negative	12.2	3.2	P = 0.02 SLE SA-negative vs HC SA-negative
Team sports practice (%)
SA-positive	5.5	30.0	P < 0.001 SLE SA-positive vs HC SA-positive
SA-negative	0	3.2	P < 0.001 HC SA-positive vs HC SA-negative
Previous SA infections (%)
SA-positive	0	0	NS
SA-negative	3.0	0