Says who? The significance of sampling in mental health surveys during COVID-19

The COVID-19 pandemic is expected to have profound and enduring effects on mental health but, until we have data, we will not know its form, extent, duration, or distribution. An appropriate public health response to mitigate and manage mental health sequelae is likely to require substantial diversion of resources. Such decisions must be underpinned by reliable information: policy makers, commissioners, and services need to know both the scale...