Table 1

Occupational injuries to bar staff caused by one pint glasses

Annealed glass (control group)Toughened glass (intervention group)
*Most landlords noted their hours of work as greater than 80 per week. This was assumed to relate to hours in the trade, as opposed to hours working the bar. Therefore, exposure times were scaled down—based on average opening hours, and a six day week. For those not recording their hours of work, the mean number of hours worked by all “ordinary” bar staff was used.
No of injuries4372
No of people injured3662
Total No of people in group576653
Total No of hours worked*71 73876 356