Understanding report scoring is key to interpreting the results of your inspections. Scores are calculated based on the number of positive and negative observations, and severity ratings can further adjust the final score. Here's how the scoring works:
Basic Calculation of Inspection Score
Let's start with a simple example. Suppose you have the following:
Total items observed: 32
Positive observations: 29
Negative observations: 3
To calculate the positive score:
Divide the number of positive observations by the total number of observations:
2932=0.90625\frac{29}{32} = 0.906253229=0.90625Multiply by 100 to get the percentage score:
0.90625×100=90.6% (positive score)0.90625 \times 100 = 90.6\% \text{ (positive score)}0.90625×100=90.6% (positive score)
So, the inspection score based on positive observations is 90.6%.
Another Example:
Let’s say you have another inspection with:
Total items observed: 30
Positive observations: 28
Negative observations: 2
Calculate the positive score:
2830=0.9333\frac{28}{30} = 0.93333028=0.9333 0.9333×100=93.3% (positive score)0.9333 \times 100 = 93.3\% \text{ (positive score)}0.9333×100=93.3% (positive score)
The inspection score here is 93.3% based on positive observations.
Adjusting for Severity Ratings
In some cases, negative observations may be assigned severity ratings that can adjust the final score. For instance, if you have a Serious rating on one negative observation, it will deduct 5 points, and if another negative observation is rated as Critical, it will deduct 10 points.
Continuing with the previous example:
For the Serious rating (5-point deduction):
93.3%−5=88.3%93.3\% - 5 = 88.3\%93.3%−5=88.3%For the Critical rating (10-point deduction):
88.3%−10=78.3% 88.3\% - 10 = 78.3\%88.3%−10=78.3%
After applying the severity ratings, the adjusted inspection score is 78.3%.
Summary of Report Scoring:
Basic score: Calculated by dividing the positive observations by the total observations.
Adjusted score: When severity ratings (such as Serious or Critical) are applied to negative observations, they will deduct points from the overall score.
Severity ratings impact: Serious deductions are 5 points, Critical deductions are 10 points, and so on.
Understanding this process ensures you can interpret inspection scores accurately, allowing for better tracking of performance and safety compliance.