TY - JOUR T1 - Stress, development and mental health study, the follow-up study of Finnish TAM cohort from adolescence to midlife: cohort profile JF - BMJ Open JO - BMJ Open DO - 10.1136/bmjopen-2020-046654 VL - 11 IS - 12 SP - e046654 AU - Noora Berg AU - Olli Kiviruusu AU - Jenna Grundström AU - Taina Huurre AU - Mauri Marttunen Y1 - 2021/12/01 UR - http://bmjopen.bmj.com/content/11/12/e046654.abstract N2 - Purpose This cohort profile describes the Stress, development and mental health study (TAM), which is a cohort study investigating risk and protective factors as well as longitudinal associations regarding mental health and well-being from adolescence to midlife. This interdisciplinary cohort study operates, for example, in the fields of public health, social medicine, psychiatry and the life course perspective.Participants In 1981 (n=2242, 98.0% of the target population), 1982 (n=2191, 95.6%) and 1983 (n=2194, 96.7%) during school classes, surveys were conducted to all Finnish-speaking pupils (mostly born 1967) in the Tampere region in Finland. Participants of the school study at age 16 in 1983 (n=2194) comprised the base population for the longitudinal data and were followed-up using postal questionnaires in the years 1989, 1999, 2009 and 2019 at ages 22 (n=1656, 75.5% of the age 16 participants), 32 (n=1471, 67.0%), 42 (n=1334, 60.8%) and 52 (n=1160, 52.9%).Findings to date The self-reported questionnaires include information on physical and mental health (eg, depression and mood disorders, anxiety disorders), health behaviour and substance misuse (eg, alcohol, tobacco and exercise), socioeconomic conditions, psychosocial resources (eg, self-esteem), social relationships and support, life events, etc. The numerous studies published to date have examined mental health and various factors from several perspectives such as risk and protective factors, individual developmental paths (eg, trajectories) and pathway models (mediation and moderation).Future plans Current and future research areas include, for example, longitudinal associations between mental health (eg, depressive symptoms, self-esteem) and (1) substance use (alcohol and tobacco), (2) family transitions (eg, parenthood, relationship status) and (3) retirement. Next follow-up is planned to be conducted at the latest at age 62 in 2029. Before that it is possible to link the data with cause-of-death register.Data are available upon reasonable request. The data cannot be placed on a public repository or given as supporting files due to legal restrictions and the nature of the data (individual level data). Although the data have been analysed as pseudonymised, the original code for linking the data with participants exists (stored separately) and has not been destroyed for follow-up purposes. Individual-level data cannot be made publicly available in case the original linkage can still be retrieved, even though the actual linking information would not be made public. Suggestions for scientific collaboration are welcome. Data requests are reviewed in the Finnish Institute for Health and Welfare for compliance with the original research purposes of the study project. Suggestions for collaboration may be sent to: Noora Berg or Olli Kiviruusu, Finnish Institute for Health and Welfare, PO Box 30, 00271 Helsinki, Finland (contact: noora.berg@thl.fi/olli.kiviruusu@thl.fi). ER -