Limitations
pre-lockdown
A limitation of the pre-lockdown intervention is that it is time intensive for the SUH team as well as the contact centre, requiring planning, coordination, communication and carrying out the implementation activities. It was challenging for staff in some centres to partake in non-desk based SUH activities as their shifts were quite rigid and they had little flexibility for taking time away from their desks.Since participation in data collection is voluntary, another limitation is that the evaluation may predominantly capture outcomes and views from enthusiastic and interested staff. A number of centres were engaged in the North East Better Health at Work Award, implying that the sample may have a bias in including centres that are actively considering health improvement activities.The COVID-19 pandemic compelled researchers to abandon or change their research plans [