5-F risk factors for cholelithiasis (mnemonic)

Dr Daniel J Bell and Dr Henry Knipe et al.

The 5-F rule refers to risk factors for the development of cholelithiasis in the event of upper abdominal pain:

  • fair: more prevalent in the Caucasian population 1
  • fat: BMI >30
  • female
  • fertile: one or more children
  • forty: age ≥40
    • cholelithiasis can occur in young patients with a positive family history; in such cases, the 'familial' factor can substitute for the 'forty' factor 2
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Article information

rID: 25149
Section: Mnemonics
Synonyms or Alternate Spellings:
  • Females, fertile, fat, forty, fair and family history
  • 5 F rule

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