Figure 3.

Change in wake time 1, 2, and 3 years postretirement by circadian preference category. Model-based estimates of change in wake time (in min) with 95% confidence intervals associated with transitioning from full-time work to full retirement up to 1, 2, and 3 y posttransition, from the model that included an interaction term between retirement and circadian preference. Circadian preference was determined by select items of the Morningness Eveningness Questionnaire and subjects were categorized according to Evening type, Neutral (neither morning nor evening preference), Moderately Morning type, and Definitely Morning type. Models were adjusted for age, sex, and self-rated health.