Table 1.

The distribution of injuries and illnesses that occurred during each roster type, categorized into the quartile in which they occurred relative to the length of a swing (n = 101). The percentage value is relative to the proportion of workers in each quartile for that roster type.

Roster type	First quartile n (%)	Second quartile n (%)	Third quartile n (%)	Fourth quartile n (%)	Grand Total
6 days on: 1 day off		1 (100)			1
7 days on: 7 days off	1 (20)	1 (20)	2 (40)	1 (20)	5
8 days on: 6 days off			1 (100)		1
9 days on: 5 days off	2 (15)	2 (15)	4 (31)	5 (39)	13
14 days on: 7 days off	22 (32)	20 (29)	15 (22)	12 (17)	69
14 days on: 14 days off	1 (33)	2 (67)			3
28 days on: 7 days off	2 (29)		3 (42)	2 (29)	7
28 days on: 28 days off	1 (50)		1 (50)		2