## 4 Results
### Model Intepretation and Application in Safety
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Nature**} & \multirow{2}{*}{**Age**} & \multirow{2}{*}{**Experience**} & \multirow{2}{*}{\
\begin{tabular}{c} **Strain or** \\ **Injury by** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **Fall, Slip,** \\ **or Trip** \\ **Injury** \\ \end{tabular} } & \multicolumn{2}{c}{**Struck or**} & \multicolumn{2}{c}{**Cut,**} & \multicolumn{2}{c}{**Cut,**} & \multicolumn{2}{c}{**Caught in,**} & \multicolumn{2}{c}{**Final**} \\  & & & **or Trip** & **Injury** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** & **Puncture,** \\ \hline amputation & 43 & 6.5 & 0.00 & 0.00 & 0.20 & _0.46_ & 0.16 & 0.18 & cut, puncture, scrap & \\ hernia & 43 & 6.5 & 0.88 & 0.12 & 0.00 & 0.00 & 0.00 & 0.00 & strain or injury by caught in, \\ crushing & 43 & 6.5 & 0.00 & 0.01 & 0.43 & 0.02 & 0.00 & _0.53_ & under, or between \\ puncture & 53 & 16 & 0.00 & 0.14 & _0.43_ & 0.31 & 0.00 & 0.11 & struck or injured by \\ hearing loss & 53 & 16 & 0.00 & 0.00 & 0.01 & 0.01 & _0.98_ & 0.00 & heat or cold exposures fall, slip, or trip injury \\ fracture & 53 & 9 & 0.03 & 0.78 & 0.15 & 0.00 & 0.00 & 0.03 & trip injury \\ \hline \hline \end{tabular}
\end{table} 
Table 8: Predicted cause group in grain elevator operations via probabilities from MLP model. Further application of ANNs involved estimating the most probable, and predicting the most dominant causes of, incidents, based on occupation. _Strain or injury by_ was predicted as the main cause of injury in grain elevator operations, farm machinery operations, grain milling, and auto service/ repair occupation classes, which is the same as in the original data. Hay grain or feed dealers have the same actual and predicted main cause group, of _fall, strip, or trip_. For chauffeurs, helpers and gas and oil dealers, the actual cause group is _fall, strip, or trip_ injury, while the most likely predicted cause is _strain or injury by_. Considering these results, the most dominant cause groups for all occupations in commercial grain elevators are either _strain or injury by_, or _fall, slip, and trip_ injury. Safety practitioners can prioritize preventing those incidents that are caused by these two groups, and invest in doing so, with the purpose of efficiently decreasing the frequency of incidents. Considering the monetary expenses of occupational incidents, the loss was huge. These data show that, on average, $16,200 was incurred on medical costs and $8400 on indemnity costs for a worker injured due to _fall, slip, or trip_ injuries. The average medical and indemnity expenses for an injury caused by _strain_ were $7800 and $5400, respectively. The highest mean medical and indemnity costs belong to the _caught in, under, or between_ cause group ($19,000 and $9500), followed by the _heat or cold exposure_ cause group ($16,500 and $5000). _Struck, or injured by_, and _cut, puncture, scrap_ cause groups had the lowest medical ($5600 and $2300), and indemnity costs ($2700 and $620).