本研究分析行政院勞工委員會於1996至2002年間250件營造業重大感電職業災害死亡案例，以媒介物為基準將各案例劃分至七種危害類型上(高壓電線、帶電設備、漏電或損壞設備)，並將碰觸類型區分為直接碰觸與間接碰觸，間接碰觸透過的媒介物例如有起重機或懸臂車輛、金屬材料或管材與其他導電性材料等等。對每件重大感電職業災害案例中的年齡、雇用人數、工作經驗、作業別、媒介物、發生原因與危害類型等項目進行編碼，接著應用卡方自動互動檢視法(CHAID) 透過逐次搜尋處理多個屬性間(年齡、公司規模、經驗、作業別、媒介物、發生原因、危害類型)的相互關係，以找到預測因素之子集合，並可能獲得有意義的分類與危害情境。一系列的危害情境感電路徑圖是依照CHAID分析結果及結合路徑分析圖與可靠度區塊圖(RBD)方法所建構出來，每一危害情境感電路徑圖可以清楚說明電流的流動路徑與如何傳遞到受害者，且從每一個危害情境感電路徑圖中可以提出有效的預防措施以阻斷感電電流行進之路徑。

The current study analyzed 250 electrical fatalities in the construction industry from 1996 to 2002 into seven patterns based on source of electricity (power line, energized equipment, improperly installed or damaged equipment), direct contact or indirect contact through some source of injury (boom vehicle, metal bar or pipe, and other conductive material). Each fatality was coded in terms of age, company size, experience, performing tasks, source of injury, accident cause and hazard pattern. The Chi-square Automatic Interaction Detector (CHAID) was applied to the coded data of the fatal electrocution to find a subset of predictors that might derive meaningful classifications or accident scenarios. A series of flow diagrams was constructed based on CHAID result, flow diagram and Reliability Block Diagram (RBD) to illustrate the flow of electricity traveling from electrical source to human body. Each of the flow diagrams can be directly linked with feasible prevention strategies by cutting the flow of electricity.

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