Table 3.

2009 ASN ITE reference groupa (n = 293) summary item statistics by content area

Content AreaNumber of Items Scored (Deleted)Item Difficulty (P value) Mean (SD)
General aspects of chronic kidney disease18 (2)0.71 (0.20)
Glomerular/vascular disorders19 (0)0.62 (0.26)
Tubular/interstitial and cystic disorders8 (1)0.80 (0.12)
Acute renal failure/intensive care unit nephrology16 (0)0.64 (0.28)
Kidney transplantation14 (1)0.58 (0.21)
Hypertension15 (0)0.68 (0.21)
Electrolyte physiology: sodium/water13 (0)0.78 (0.16)
Electrolyte physiology: acid-base/potassium14 (0)0.62 (0.20)
Mineral metabolism11 (0)0.80 (0.13)
Clinical pharmacology14 (0)0.73 (0.19)
Ethics4 (0)0.76 (0.20)
Total146 (4)0.69 (0.21)
  • a The reference group is composed of second-year fellows who took the examination under standard test conditions and who experienced few or no incidents on the testing day.