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Table 2 MEQ classification of diurnal preference (N = 75)

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

   Definitive morning type Rather morning type Rather evening type Definitive evening type
  Missing N % N % N % N %
Present 3 16 21.3 18 24.0 27 36.0 11 14.7
At age 40 Years 6 20 26.7 11 14.7 23 30.7 15 20.0
At age 30 Years 6 19 25.3 10 13.3 22 29.3 18 24.0