Conicity Index: Females, Age 55-59

Page updated: Evidence reviewed: What this means

What these numbers mean

A value around 1.326 index is typical (50th percentile) for females in this age group. The middle 50% of the reference population fall between about 1.271 index and 1.384 index; values below or above that central range sit in the lower or upper half of the distribution.

These are US population percentiles pooled across NHANES survey periods from 2015 through 2023. They describe how a value ranks within the same sex and age bracket; they are not diagnostic cut-offs.

Also see: 50-54 · 60-64 · All ages

Data source: NHANES (CDC), derived Conicity Index percentiles (2026) · n=873 About this study

Reference population: US adults aged 20 and over from NHANES survey periods spanning 2015-2023 after excluding participants recorded as pregnant, nationally representative

Conicity Index Body Composition Females 55-59

Conicity Index Percentile Chart (index)

Very low 1.177 index
Low 1.271 index
Average 1.326 index
High 1.384 index
Very high 1.468 index
Conicity Index percentile distribution chart for Females, age 55-59 5th 5th: 1.177 index (Very low) 1.177 Very low 25th 25th: 1.271 index (Low) 1.271 Low 50th 50th: 1.326 index (Average) 1.326 Average 75th 75th: 1.384 index (High) 1.384 High 95th 95th: 1.468 index (Very high) 1.468 Very high 0 0.3 0.6 1.0 1.3 1.6 index Conicity Index percentile distribution chart for Females, age 55-59 5th 5th: 1.177 index (Very low) 1.177 Very low 25th 25th: 1.271 index (Low) 1.271 Low 50th 50th: 1.326 index (Average) 1.326 Average 75th 75th: 1.384 index (High) 1.384 High 95th 95th: 1.468 index (Very high) 1.468 Very high 0 0.3 0.6 1.0 1.3 1.6 index

This percentile chart shows how common a value is, not whether it is healthy.

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Other age brackets
20-2425-2930-3435-3940-4445-4950-5460-6465-6970-7475-7980+ All
Males data Males, 55-59
Age trend

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