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Injury Index Formula

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Injury Index gives the overall picture of injuries signifying both frequency and severity. Check FAQs

II = I r \cdot R i \cdot \frac{I n}{1000}

II - Injury Index?I_r - Injury Frequency Rate?R_i - Injury Severity Rate?I_n - Number of Disabling Injuries?

Injury Index Example

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Here is how the Injury Index equation looks like with Values.

Here is how the Injury Index equation looks like with Units.

Here is how the Injury Index equation looks like.

288 = 800 \cdot 18 \cdot \frac{20}{1000}

288 = 800 \cdot 18 \cdot \frac{20}{1000}

288 = 800 \cdot 18 \cdot \frac{20}{1000}

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Injury Index Solution

Follow our step by step solution on how to calculate Injury Index?

FIRST Step Consider the formula

II = I r \cdot R i \cdot \frac{I n}{1000}

Next Step Substitute values of Variables

∴

II = 800 \cdot 18 \cdot \frac{20}{1000}

Next Step Prepare to Evaluate

∴

II = 800 \cdot 18 \cdot \frac{20}{1000}

LAST Step Evaluate

∴

II = 288

Injury Index Formula Elements

Variables

Injury Index

Injury Index gives the overall picture of injuries signifying both frequency and severity.

Symbol: II

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Injury Index

Injury Frequency Rate

Injury Frequency Rate defines the number of disabling injuries per one lakh man hours worked.

Symbol: I_r

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Injury Frequency Rate

Injury Severity Rate

Injury Severity Rate defines the number of days lost time due to injury for 1000 man hours worked.

Symbol: R_i

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Injury Severity Rate

Number of Disabling Injuries

Number of Disabling Injuries refers to the injuries that result in either death or permanent disability, or temporary total disability after the day of injury.

Symbol: I_n

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Number of Disabling Injuries

Other formulas in Construction Safety Management category

Go Injury Frequency Rate

I r = I n \cdot \frac{100000}{N mh}

Go Number of Disabling Injuries given Frequency Rate

I n = I r \cdot \frac{N mh}{100000}

Go Number of Man-Hour Worked given Frequency Rate

N mh = I n \cdot \frac{100000}{I r}

Go Injury Severity Rate

R i = D l \cdot \frac{1000}{N mh}

How to Evaluate Injury Index?

Injury Index evaluator uses Injury Index = Injury Frequency Rate*Injury Severity Rate*Number of Disabling Injuries/1000 to evaluate the Injury Index, The Injury Index formula is defined as it gives the overall picture of injuries signifying both frequency and severity. An injury here refers to something which makes the workers lose a day. Injury Index is denoted by II symbol.

How to evaluate Injury Index using this online evaluator? To use this online evaluator for Injury Index, enter Injury Frequency Rate (I_r), Injury Severity Rate (R_i) & Number of Disabling Injuries (I_n) and hit the calculate button.

FAQs on Injury Index

What is the formula to find Injury Index?

The formula of Injury Index is expressed as Injury Index = Injury Frequency Rate*Injury Severity Rate*Number of Disabling Injuries/1000. Here is an example- 288 = 800*18*20/1000.

How to calculate Injury Index?

With Injury Frequency Rate (I_r), Injury Severity Rate (R_i) & Number of Disabling Injuries (I_n) we can find Injury Index using the formula - Injury Index = Injury Frequency Rate*Injury Severity Rate*Number of Disabling Injuries/1000.

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Injury Index Formula

Injury Index Example

Injury Index Solution

Injury Index Formula Elements

Other formulas in Construction Safety Management category

How to Evaluate Injury Index?

FAQs on Injury Index

Variable Name