For both Scheme and non-Scheme projects there were extreme LTIFR values which suggest these observations could be treated as outliers. The 90 per cent Winsorized mean (a Winsorized mean is regarded as a more robust estimator of the central tendency as it is less sensitive to outliers see – Glossary) for LTIFR for both scheme and non-scheme projects, improved in the last biannual period. Medically Treated Injury Frequency Rate (MTIFR) MTIFR MTIFR MTIFR MTIFR MTIFR Arithmetic Winsorized MTIFR Arithmetic Winsorized Median on Mean on Mean on Median on Mean on Mean on Scheme Scheme Scheme Period projects projects projects projects projects projects 9.53 23.32 Jul to Dec 2007 1.75 12.57 21.44 53.47 16.29 24.36 Jan to Jun 2008 0.00 18.65 19.42 30.10 14.50 16.67 Jul to Dec 2008 2.78 21.79 13.18 21.10 For each of the three reporting periods, around half of the accredited contractors reported no MTI’s for Scheme projects, while around one quarter of accredited contractors reported no MTI’s for non-Scheme projects. For both Scheme and non-Scheme projects there were extreme MTIFR values which suggest these observations could be treated as outliers. The 90 per cent Winsorized mean (a Winsorized mean is regarded as a more robust estimator of the central tendency as it is less sensitive to outliers see – Glossary) for MTIFR for both scheme and non-scheme projects, improved in the last biannual period. Fatalities Number Fatalities of incidence Fatalities Fatalities from rate from Fatalities Number of incidence Number of ASCC ASCC Fatalities incidence Fatalities rate on on rate on on Scheme Scheme industry industry Period projects3 projects3 projects3 projects3 data2 data2 Jul to Dec 2007 1 4.53 1 0.42 20 2.99 Jan to Jun 2008 0 0.00 6 2.12 16 2.29 Jul to Dec 2008 0 0.00 4 1.30 18 2.56 There were no fatalities on scheme projects in the latest biannual reporting period leading to no scheme project fatalities for the 2008 calendar year. Between the December 2007 and December 2008 reporting periods, project fatalities increased as did the incidence rate, however, the
For both Scheme and non-Scheme projects there were extreme LTIFR values which suggest these observations could be treated as outliers. The 90 per cent Winsorized mean (a Winsorized mean is regarded as a more robust estimator of the central tendency as it is less sensitive to outliers – see Glossary) for LTIFR for both scheme and non-scheme projects, improved in the last biannual period. Medically Treated Injury Frequency Rate (MTIFR) Period MTIFR Median on Scheme projects MTIFR Arithmetic Mean on Scheme projects MTIFR Winsorized Mean on Scheme projects MTIFR Median on projects MTIFR Arithmetic Mean on projects MTIFR Winsorized Mean on projects Jul to Dec 2007 1.75 12.57 9.53 21.44 53.47 23.32 Jan to Jun 2008 0.00 18.65 16.29 19.42 30.10 24.36 Jul to Dec 2008 2.78 21.79 14.50 13.18 21.10 16.67 For each of the three reporting periods, around half of the accredited contractors reported no MTI’s for Scheme projects, while around one quarter of accredited contractors reported no MTI’s for non-Scheme projects. For both Scheme and non-Scheme projects there were extreme MTIFR values which suggest these observations could be treated as outliers. The 90 per cent Winsorized mean (a Winsorized mean is regarded as a more robust estimator of the central tendency as it is less sensitive to outliers – see Glossary) for MTIFR for both scheme and non-scheme projects, improved in the last biannual period. Fatalities Period Number of Fatalities on Scheme projects3 Fatalities incidence rate on Scheme projects3 Number of Fatalities on projects3 Fatalities incidence rate on projects3 Number of Fatalities from ASCC industry data2 Fatalities incidence rate from ASCC industry data2 Jul to Dec 2007 1 4.53 1 0.42 20 2.99 Jan to Jun 2008 0 0.00 6 2.12 16 2.29 Jul to Dec 2008 0 0.00 4 1.30 18 2.56 There were no fatalities on scheme projects in the latest biannual reporting period leading to no scheme project fatalities for the 2008 calendar year. Between the December 2007 and December 2008 reporting periods, project fatalities increased as did the incidence rate, however, the