Table 3.

Estimated risk of the six most common spa types at first sample by healthcare worker status. S. aureus nasal carriers (n = 593), The Tromsø Staph and Skin Study

	Non-HCWs (n = 487)	HCWs (n = 106)	OR*	95% CI	OR†	95% CI
	n (%)	n (%)
t012 (n = 57)	38 (7·8)	19 (17·9)	2·58	(1·42–4·69)	2·17	(1·16–4·08)
t084 (n = 31)	27 (5·5)	4 (3·8)	0·67	(0·23–1·95)	0·74	(0·24–2·23)
t065 (n = 27)	20 (4·1)	7 (6·6)	1·65	(0·68–4·01)	1·94	(0·75–4·98)
t021 (n = 20)	16 (3·3)	4 (3·8)	1·15	(0·38–3·53)	1·48	(0·45–4·79)
t015 (n = 19)	12 (2·5)	7 (6·6)	2·80	(1·07–7·29)	3·16	(1·13–8·87)
t002 (n = 12)‡	12 (2·5)	0 (0·0)

HCW, Healthcare worker; OR, odds ratio; CI, confidence interval.

^*Logistic regression model (unadjusted).

^†Multivariable logistic regression model including: age and gender.

^‡No OR estimates due to no spa type t002 in HCWs.