Wellbeing recovery inequity following the 2010/2011 Canterbury earthquake sequence: repeated cross‐sectional studies

To track population mental wellbeing following the 2010/2011 Christchurch earthquakes and after‐shocks. The Canterbury Wellbeing Survey, a cross‐sectional survey of randomly selected adults aged ≥18 years resident in Christchurch, was repeated biannually from April 2013 until June 2017 and annually thereafter. The self‐reported 5‐item World Health Organization Well‐Being Index (WHO‐5) has been elicited from April 2013. Regression analysis was employed to model WHO‐5 score patterns over time and between important socio‐demographic groups. Between 1,137 and 1,482 adults participated in each survey, totalling 14,100 overall. The mean WHO‐5 significantly increased (p