Follow-up questions

What type of study is described in the article by Pokorná et al.?

The authors state that the data presented are based on administrative data from national registries and mention this as a limitation. What could the significance of this be?

Which pressure ulcer category was most common in ICU patients?

In the study by Pokorná et al, the overall prevalence of pressure ulcers in 2020 was 0.88% Compare these figures with the pressure ulcer prevalence in 2020 in the study by Källman et al. What do you think is the reason for this difference? More than one answer may be correct.