Table 3 Checklist for the evaluation of non-response over time in repeated cross-sectional studies

Step 1

Did the change in response over time differ between subgroups?

Y

N

Y

Y

N

Y

Step 2

Did the variation in outcome change over time?

N

N

N

N

N

N

Step 3

Did the difference between weighted and unweighted prevalence estimates of the outcome change over time?

N

N

N

N

N

N

Step 4

Did the association between sociodemographic determinants and outcome change over time?

N

Y

N

N

N

N

Summary

Is it likely that increasing non-response over time biased estimated time trends in outcomes?

N

N

N

N

N

N