Which control chart of SPC would be suitable for Length of say in hosp?

23 April 2024 1 8K Report

Hi everyone,

I have two columns in my dataset: one for admission date and another for length of stay in the hospital.

I plan to analyze this data using an SPC chart, with the data grouped by quarter.

Below are the sample sizes for each subgroup:

2021 Q3: 69
2021 Q4: 67
2022 Q1: 75
2022 Q2: 75
2022 Q3: 46
2022 Q4: 67
2023 Q1: 67
2023 Q2: 70

Given this data, which type of control chart would be suitable for monitoring variations in the length of hospital stays over time?

Thanks,

John Oakland

If the data is recording whole days, use an attribute chart, such as np chart, with control lines calculated from the data to determine the variation. Could also use a Cusum chart. If

See Statistical Process Control 7ed by Oakland

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