"I would make this a required field. Also, it would be important to distinguish the diagnosis of the sample vs a previous diagnosis of cancer this patient may have had. For example, the “diagnosis” here may be normal fallopian tube, but the patient may have had breast cancer years earlier, and this should be captured."
Add time point variables:
Pat Morin's comment:
"I would make this a required field. Also, it would be important to distinguish the diagnosis of the sample vs a previous diagnosis of cancer this patient may have had. For example, the “diagnosis” here may be normal fallopian tube, but the patient may have had breast cancer years earlier, and this should be captured."