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. 2021 Mar 20;22:220. doi: 10.1186/s13063-021-05160-5

Fig. 2.

Fig. 2

Top panels illustrate reporting of the three major outcome domain taxonomy categories over the successive follow-up time points. Bottom panels illustrate reporting of the two major measurement methods over time. All data are reported as a percentage, normalised to the total number of outcome data items assessed at that time point and calculated separately for primary and secondary outcomes