Supplemental Material for
Are Loneliness Interventions Effective for Reducing Loneliness? A Meta-Analytic Review of 280 Studies
Mathias Lasgaard 
, Pamela Qualter , Claus Løvschall, Lisbeth Mølgaard Laustsen , Michelle H. Lim , Sigrid Engelbrecht Sjøl , Lauren Burke , Emely Ek Blæhr , Helle Terkildsen Maindal , Anne-Sofie Hargaard, Robin Christensen , and
Julie Christiansen
American Psychologist,
Vol.
81,
No.
1,
pp.
36–52
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