Table 3.

Use of coronary angiography during hospitalization according to estimated CrC

≤45 ml/min (n = 152)45 to 60 ml/min (n = 198)>60 ml/min (n = 728)Differencea
Coronary angiography, all patients (%)71 (47)108 (55)458 (63)−16 (−31, −1)c
Coronary angiography, high-risk patientsb (%)34 (62)39 (71)131 (87)−25 (−39, −11)c
  • a Reported differences are between subjects with a CrC ≤45 ml/min and the reference group (>60 ml/min) and are expressed in percent with a 95% CI.

  • b There were 261 subjects considered at high risk (UA after a MI, heart failure, or hemodynamic instability): 55 with a CrC ≤45 ml/min, 55 in the 45- to 60-ml/min category, and 151 with a CrC >60 ml/min.

  • c P ≤ 0.05 by χ2 for a difference between the three groups.