One of my colleagues was creating test patients for a measure created by another colleague and ran into an interesting problem with Bonnie's current date, and birthdates of patients.

Bonnie is always 2012, which we all know about - but the measure calls for people who turned 52 during the measurement period to be part of the IPP.

This text below is from my colleagues email to me:

"I’m pretty sure that Alpha Bonnie cannot catch people who turned 52 in 2012.

For our Breast Cancer Screening measure, the IPP is women 52-74 years as of December 31 of the measurement year. I set the birthdate of one test patient on 2/1/1960. Technically, she should turn 52 on 2/1/2012, which qualifies the criterion for the IPP. However, Alpha Bonnie didn’t capture it and didn’t check the IPP for her. And as I changed her birthdate to 12/31/1959, the IPP box got checked. I think it’s because Alpha Bonnie cannot capture the patients who turned 52 in 2012 and just those who were already 52 and over in that year. Could you please check it for us? Is it because Bonnie gets confused about the current year (2012) sometimes?"