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

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

  Missing Mean SDa 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
  1. aSD standard deviation