Table 2. Numbers of leptospirosis-associated and nonleptospirosis infectious disease–associated hospitalizations by selected variables, United States, 1998–2009.

Variable, characteristic	Median no. (25th, 75th quartiles) hospitalizations
Patient age, y
Infection type
Leptospirosis-associated	42.1 (27.8, 57.4)
Nonleptospirosis infectious disease	56.4 (30.4, 76.2)
Sex of patient
M	40.8 (27.0, 55.4)
F	44.2 (30.2, 60.6)
Length of hospital stay, d, by hospitalization type
Leptospirosis-associated	4.1 (2.4, 7.5)
Nonleptospirosis infectious disease–associated	3.3 (1.7, 6.0)
Hospital charges, US dollars, by leptospirosis-associated hospitalizations
Total	19,768 (10,444, 37,422)
Sex of patient
M	18,577 (11,161, 34,855)
F	24,093 (9,279, 44,960)
Patient age group, y
<20	17,815 (9,253, 33,780)
20–59	18,942 (10,700, 35,046)
>60	24,578 (10,230, 58,103)