Confidence in the future, health-related behaviour and psychological distress: results from a web-based cross-sectional study of 101 257 Finns.

Objectives: To investigate the role of socioeconomic status and psychological stress to potential associations between confidence in the future and a wide range of health-related behaviours.

Design: Web-based cross-sectional study including an 'Electronic Health Check' at the Finnish Happiness-Flourishing Study website linked to a TV programme on happiness and depression.

Setting: The Finnish population with access to the internet.