Table 3.

Comparison of Restless Legs Syndrome severity and weekly occurrence between groups

Group	Severity Scale		Weekly occurrence
	< 21	≥ 21	< 4 day	≥ 4 day
Day workers (Group A), n (%)	11 (50)	11 (50)	13 (59.1)	9 (40.9)
Rotational shift workers, n (%)
- Group B	14 (36.8)	24 (63.2)	16 (42.1)	22 (57.9)
- Group C	11 (28.9)	27 (71.1)	18 (47.4)	20 (52.6)
- Groups B and C	25 (32.9)	51 (67.1)	34 (44.7)	42 (55.3)

Notes: Group B: workers who follow a work schedule which consists of weekly rotation between morning and afternoon shifts for five weeks in a row, followed by one week of night shifts on week six; Group C: workers who follow a work schedule which consists of weekly rotation between morning, afternoon and night shifts.