Can we perform a meta analysis using '% change' data from paper, and if so, how do i calculate SD or CI etc?

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James Leigh

If you mean relative % change eg increase from 50% coverage to 60% coverage is 10/50 = 20% increase then you could just calculate the mean of these % increases to get an overall effect measure.

If you mean absolute differences in % vaccinated in populations, eg in above example difference in % vaccinated = +10% ,to get an overall effect measure you would need population sizes .