School and class closures and adolescent mental health during the second and later waves of the COVID-19 pandemic in Finland: a repeated cross-sectional study

• Main Authors: Arja Rimpelä (Author), Heidi Kesanto-Jokipolvi (Author), Anna Myöhänen (Author), Lauri Heikonen (Author), Sanna Oinas (Author), Raisa Ahtiainen (Author)
• Format: Book
• Published: BMC, 2023-12-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Abstract Background Since the start of the COVID-19 pandemic, several studies have shown deterioration of adolescents' mental health when comparing periods before and after the start of the pandemic when there were national school closures. Less is known of the following waves with more variati...