According to the WHO growth chart, a 1-year-old boy measuring 82 cm falls into which percentile category?

• A. <15th
• B. 50th
• C. 85th
• D. >97th

Answer: (D)

Reading the WHO growth chart, length-for-age percentile tells you where a child stands compared with peers of the same age. For a one-year-old boy, a measured length of 82 cm is well above average. Such height at this age sits in the upper tail of the reference distribution, typically above the 97th percentile, meaning only a small fraction of boys his age are taller. Therefore, the best category is the highest percentile group. If he were at the median, his length would be around mid-70s cm, and at the 85th percentile he would be tall but not as extreme as 82 cm; being under the 15th percentile would indicate a much shorter height for age.