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. 2006 Mar 21;63(7):461–468. doi: 10.1136/oem.2005.020032

Table 1 Number of participants involved in various parts of the study, number of dropouts, non‐responders, and final numbers included in the analyses (both pre‐ and post‐test).

Participants Experimental group (n) Control group (n)
At start Dropout No response Both pre‐ and post‐test At start Dropout No response Both pre‐ and post‐test
Occupational Health Services 9 1 8 6 2 pre 6
OHS professionals 18 5 13 11 1 pre, 2 post 8
Departments 16 4 12 10 1 post 9
Managers 12 7 5 10 1 9
Drivers 158 62 31 65 76 15 27 34
Worksites 141 61 80 62 16 46