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. Author manuscript; available in PMC: 2020 Aug 31.
Published in final edited form as: Min Metall Explor. 2020 Jan 22;37(3):873–885. doi: 10.1007/s42461-020-00206-9

Table 3.

NPAR1WAY median results

Corrective action N Sum of scores SD under H0
Engineering control 20 10.020 1.875531
Elimination or substitution energy source 47 15.580 2.597707
Implement safe procedures 68 41.380 2.838067
Not fixed 17 6.340 1.746710
Issue PPE 15 9.680 1.651650

Average scores were used for ties