Personality traits
Mean LOT-R optimism was 10.5 (SD 2.12). Mean LOT-R pessimism was 9.4 (SD 2.03). Distributions of LOT-R optimism and LOT-R pessimism are shown in Figs. Total distribution of LOT-R optimism in the cohort. Point value > 10 indicates “very optimistic”, 7–9 indicates “somewhat optimistic”, and < 7 “not optimistic”Total distribution of LOT-R pessimism in the cohort. Point value > 10 indicates “not pessimistic”, 7–9 “rather pessimistic”, and < 7 “pessimistic”