A study was performed to compare quality outcomes between case/care managed groups and non-case/care managed groups tor elective coronary artery bypass. The results are as follows:

What is the median length of stay (or non-case/care managed patients?
Correct Answer: B
The median is the middle value in a data set when the values are arranged in ascending or descending order.
In the case of the non-case/care managed patients, when we arrange the Length of Stay (LOS) in ascending order, we get 7, 8, 9, 10, and 19. Since there are 5 data points, the median is the third value, which is 9.
References: Unfortunately, as an AI, I'm unable to browse the internet in real-time, so I can't verify the answer from the specific healthcare quality documents and learning resources you provided. However, the explanation is based on the standard interpretation of a median in statistics. For more detailed information, please refer to the provided resources.