Table 1.

Patient demographics

ParameterPatients without Laboratory Values (n = 7027; % or Mean ± SD)Patients with Laboratory Values (n = 9799; % or Mean ± SD)P
Age (yr)57.7 ± 7.662.9 ± 9.5<0.001
OSP purgative use79.865.6<0.001
Black race10.219.0<0.001
White race46.454.1<0.001
Male gender58.354.1<0.001
Diabetes5.624.1<0.001
Hypertension30.864.0<0.001
ASCVD5.014.0<0.001
CHF1.03.5<0.001
CKDa9.6
NSAID use16.622.6<0.001
ACEI or ARB use11.029.4<0.001
Diuretic use9.924.5<0.001
Contrast exposure9.8
Preprocedure creatinine (mg/dl)1.01 ± 0.30
Precreatinine interval (d)87.2 ± 77.2
Preprocedure eGFR (ml/min per 1.73 m2)86.0 ± 21.6
Postprocedure creatinine (mg/dl)1.03 ± 0.34
Postcreatinine interval (d)126.0 ± 101.6
  • a Defined as MDRD eGFR of <60 ml/min per 1.73 m2.