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KPI018 | Lost Time Sickness Frequency V4.0
Key Performance Indicator
The KPI expresses the number of cases of sick crew and any fatality due to sickness per million exposure hours.
| Interpretation | This KPI expresses the company’s ability to protect crew from sickness and fatality while serving onboard. |
| Notes | Exposure hours are 24 hours per day while serving onboard. The LTSF does not distinguish on severity of sickness. This KPI respects the privacy of information related to the crew. |
| Unit | Cases/Million Hours |
| Scope | Ship level |
| Calculation period | 12 month rolling year |
Formula
[formula]KPI018 = \frac {PI019 + PI031} {PI063 \times 10^{-6}}[/formula]
| PI019 | Number of cases where a crew member is sick for more than 24 hours |
| PI031 | Number of fatalities due to sickness |
| PI063 | Total exposure hours |
Ranking calculation example
Step 1: Calculate KPI value
| PI019 | Number of crew sick for more than 24 hours | = 0 | |
| PI031 | Number of fatalities due to sickness | = 1 | |
| PI063 | Total exposure hours | = 131400 | |
| [formula] KPI018_{Value} [/formula] | [formula] = \frac {PI019 + PI031} {PI063 \times 10^{-6}} [/formula] | [formula] = \frac {1} {131400 \times 10^{-6}} [/formula] | [formula] = 7.61 [/formula] |
Step 2: Calculate percentile rank by comparing KPI value against other ships with the same criteria. We assume that another 99 (100 in total) participate in the ranking with the same criteria and our ship has position 33 and you are the only ship in that rank.
Step 3: Calculate the percentile rank by capturing the count of all participant below your rank (cl). The frequency of ships in your same rank (fi). The total number of ships in the ranking segment (N).
[formula] KPI018_{Percentile Ranking} = \frac{cl+05*fi}{N} * 100 = \frac{67+0.5*1}{100} * 100 = 67.50 [/formula]
Interpretation: Based on the above example, we could say that, when it comes to KPI018 Lost time sickness frequency, this ship belongs in the 67.50th percentile of the ships that are being compared with based on its ranking criteria in the respective quarter.
External references
OHSAS