TABLE 3.

Multiple logistic regression of hot water distribution system and water characteristics associated with Legionella contamination

Characteristic	ORc	95% CI
Hotel age, ≥30 yr	0.65	0.37-1.15
No. of rooms, ≥80	1.14	0.60-2.15
Bungalows	1.74	0.61-4.90
Seasonal operation	3.23	1.52-6.87a
Water tank present	1.55	0.82-2.93
Oil heat	2.04	1.12-3.70a
Sample temp, ≥55°C	0.26	0.1-0.5b
Independent disinfection system	0.30	0.15-0.62a

^aP = 0.01 to 0.02.

^bP = 0.00001.

^cOR, odds ratio.