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J Am Med Inform Assoc 13:691-695 doi:10.1197/jamia.M2078
  • Original Investigation

Using Regular Expressions to Abstract Blood Pressure and Treatment Intensification Information from the Text of Physician Notes

Table 2B

Examples of Word Patterns Correctly and Incorrectly Identified in the Text of Physician Notes to Detect Documentation of Treatment Intensification

True Positives False Positives True Negatives False Negatives
Will try increasing her lisinopril She believes she started the Cozaar I prescribed to her in mid-September If his BP doesn’t come down by next visit, would recommend starting minoxidil Rx given for lisinopril 10 mg po qd
Need to start her back on glyburide and low-dose captopril Will increase lisinopril if elevated at next visit Likely will recommend labetalol next time Again adding 25 mg of HCTZ to the regimen
She currently takes losartan 50 mg daily. Will increase to 100 mg. high on diovan 160-incr to 320
He will switch from 0.1 to 0.2 mg of clonidine
We are going to change it to atenolol

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