*Statistically significant at the 99% confidence level; †Statistically significant at the 95% confidence level; ‡Statistically significant at the 90% confidence level
DISCLAIMERS: Late night caffeine drinkers, Screen users, alcohol drinkers, natural light getters are grouped as users who answered “Often” or ‘Always” to the following questions retrospectively How often do you consume caffeinated drinks in the afternoon or evening? How often do you use electronic screens before bedtime? How often do you drink alcohol in the evenings? How often do you spend time outdoors in natural light?
Gender difference graph disclaimer: Based on data from over 17,000 users. Testing for whether the differences between Males' and Females' responses are statistically significantly different from zero is done using linear regression, where the relevant question response is regressed on a binary gender indicator.
Trend line disclaimer: These graphs use information provided by over 24,000 Evergreen Life users. Percentages are displayed with a 95% confidence interval.