Whether people are happy is determined by the answer to the following question: “On a scale from 1 to 10, can you indicate to what extent you see yourself as a happy person? 1 stands for completely unhappy and 10 for completely happy.” Subsequently, three groups are distinguished: people with a score from 1 to 4 (unhappy), those with a score of 5 to 6 (neither happy nor unhappy) and those with a score from 7 to 10 (happy). More details about this categorisation can be found in the report. The data were obtained from the study Social cohesion and Well-being 2016 (Sociale samenhang & Welzijn 2016), and relate to people aged 18 and over who are a member of a private household in the Netherlands.