Risk factors and changes in depression and anxiety over time in New Zealand during COVID-19: A longitudinal cohort study

Mikaela Law, Norina Gasteiger, Kavita Vedhara, Adam Massey, Jia Ruan, Kieran Ayling, Trudie Chalder, Carol Coupland, Elizabeth Broadbent

Research output: Contribution to journalArticlepeer-review

Abstract

This longitudinal study investigated changes in and risk factors for anxiety and depression during the COVID-19 pandemic in a New Zealand cohort. Online surveys were distributed to 681 participants at three time-points: May 2020 (Time 1), August-September 2020 (Time 2), and March-April 2021 (Time 3). Participants completed measures of anxiety and depression, alongside measures of possible risk/protective factors. 261 participants completed all three surveys and were included in analyses. Depression and anxiety reduced over time; however, levels were still significantly higher than pre-pandemic norms. Being younger, having a prior mental health disorder, experiencing negative life events due to COVID-19, and being a pet owner were risk factors for poorer depression and anxiety; whereas having higher positive mood was protective. This study demonstrates persisting negative effects of the pandemic on anxiety and depression in a context of low transmission and highlights the importance of providing psychological help to those most at-risk.

Keywords: Anxiety; COVID-19; Depression; Mental health; Risk factors
Original languageEnglish
JournalPsych
Volume4
Issue number4
DOIs
Publication statusPublished - 3 Oct 2022

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