Which age ranges have a reported prevalence of 1000 per 1000 for HL?

Which age ranges have a reported prevalence of 1000 per 1000 for HL?

• A. 2-6 and 9-10
• B. 2-6 and 12-19
• C. 9-10 and 12-19
• D. 2-6 only

Answer: (A)

Interpreting prevalence per 1000 is about how many individuals in a group are affected. A value of 1000 per 1000 means every person in that age range has the condition—100% prevalence. In this item, the two age groups 2–6 and 9–10 are the ones reported to have 1000 per 1000 for HL, meaning all children in those ranges meet the HL criterion in the data source. That’s why those ranges are identified as having universal prevalence. Other age ranges don’t reach 1000 per 1000, so they don’t show universal HL. This metric helps compare how widespread HL is across ages, with 1000 per 1000 indicating that everyone in the group is affected.

Interpreting prevalence per 1000 is about how many individuals in a group are affected. A value of 1000 per 1000 means every person in that age range has the condition—100% prevalence. In this item, the two age groups 2–6 and 9–10 are the ones reported to have 1000 per 1000 for HL, meaning all children in those ranges meet the HL criterion in the data source. That’s why those ranges are identified as having universal prevalence. Other age ranges don’t reach 1000 per 1000, so they don’t show universal HL. This metric helps compare how widespread HL is across ages, with 1000 per 1000 indicating that everyone in the group is affected.