Shift work and cognitive impairment in later life – results of a cross-sectional pilot study testing the feasibility of a large-scale epidemiologic investigation

Table 3 Self-reported cumulative exposure to shift work of questionnaire respondents who have ever worked in shift (N = 60)

	Missing	Mean	SD^a	Min	Max
Years of shift work over lifetime
Total years in shift work	6	28.9	13.2	0	46
Total years in night shift	1	24.2	13.6	0	46
Years in night shift only	1	2.95	9.3	0	45
Total years in morning shift	3	27.4	15.1	0	46
Years in morning shift only	2	2.22	6.4	0	35

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