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Table 2 Demographic characteristics and acute care management of patients with blood cultures submitted to outpatient collection sites, Calgary Health Region, Calgary, Alberta (2001 and 2002).

From: Blood cultures in ambulatory outpatients

Characteristic Positive cultures (n = 51) Negative cultures (n = 1681) Total (n = 1732) P-value*
Mean age ± standard deviation (years) 49.6 ± 21.1 40.1 ± 22.6 40.3 ± 22.6 < 0.01
Male gender 30 (59%) 829 (49%) 859 (50%) 0.2
Collection at high volume (main) lab vs. other sites 16 (31%) 236 (14%) 252 (15%) < 0.01
Acute care usage within two weeks of culture 35 (69%) 296 (18%) 331 (19%) < 0.0001
Emergency department 9 (18%) 147 (9%) 156 (9%) 0.04
HPTP clinic 2 (4%) 15 (1%) 17 (1%) 0.08
Admitted to hospital 24 (47%) 134 (8%) 158 (9%) < 0.0001
Median days of acute care therapy 6 (IQR = 2, 14; n = 35) 2 (IQR = 1, 6; n = 296) 2 (IQR = 1, 6; n = 331) < 0.001
Median time (days) to acute care assessment 2 (IQR = 1, 2; n = 35) 3 (IQR = 2, 5; n = 296) 2 (IQR = 1, 5; n = 331) < 0.01
  1. Note: * p-value for comparison between those with positive and negative cultures using Fisher's exact test, Student's T test, and Wilcoxon Rank-sum test for comparison of proportions, means, and medians, respectively.