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Table 1 Baseline patient characteristics for the matched cohort (3422 per arm)

From: Pulmonary artery catheter use in adult patients undergoing cardiac surgery: a retrospective, cohort study

Demographics No PAC % (n) PAC % (n) Standardized difference*
Age at admission
 Mean (Std. Dev) 64.8 (11.5) 64.9 (11.8) 0.01
EuroScore II
 Mean (Std. Dev) 0.03 (0.03) 0.03 (0.03) 0.01
Gender
 Female 31.0 (1060) 32.1 (1099) 0.03
 Male 69.0 (2362) 67.9 (2323)
Race
 Black 6.5 (222) 7.3 (250) 0.03
 White 86.2 (2951) 85.6 (2928)
 Asian 1.2 (41) 1.2 (40)
 Hispanic 0.6 (21) 0.6 (22)
 Other 5.5 (187) 5.3 (182)
Institution bed size
 100–199 0.3 (10) 0.4 (15) 0.04
 200–299 22.2 (761) 21.2 (727)
 300–499 16.0 (547) 15.1 (518)
 500+ 61.5 (2104) 63.2 (2162)
Admission type
 Elective 52.4 (1792) 53.3 (1823) 0.04
 Non-elective 44.4 (1522) 44.2 (1511)
 Other/unspecified 3.2 (108) 2.6 (88)
Payer
 Commercial 35.1 (1201) 35.2 (1204) 0.03
 Government 48.3 (1653) 48.0 (1634)
 Payer not available 8.4 (288) 9.0 (307)
 Self-pay 8.2 (280) 8.1 (277)
Teaching institution
 Yes 86.4 (2956) 86.3 (2953) 0.00
 No 13.6 (466) 13.7 (469)
US census region
 South 52.0 (1781) 53.0 (1815) 0.04
 Northeast 22.9 (784) 21.6 (740)
 Midwest 14.3 (490) 13.9 (477)
 West 10.7 (367) 11.4 (390)
Cardiac procedure class
 Isolated CABG 65.5 (2241) 64.0 (2191) 0.04
 Isolated valve 19.8 (679) 21.1 (723)
 Multi-cardiac procedure 13.0 (446) 13.5 (461)
 Heart transplant 0.8 (26) 0.7 (23)
 Other complex non-valvular 0.8 (29) 0.7 (23)
 Aortic procedure 0.0 (1) 0.0 (1)
  1. *Standardized differences are reported as absolute values