Red Cell Distribution Width (RDW)
Females, Age 40-49
The median RDW for females aged 40-49 in the US population is 13.6%, with 90% of the population falling between 12.5% and 17.2%.
NHANES 2017-March 2020 Pre-Pandemic 2017-2020 · Sample size: 659 participants · Unit: %
Percentile Distribution
| Percentile | P5 | P10 | P25 | P50 | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|
| Value (%) | 12.5 | 12.7 | 13 | 13.6 | 14.6 | 16.5 | 17.2 |
| Percentile | Value (%) |
|---|---|
| P5 | 12.5 |
| P10 | 12.7 |
| P25 | 13 |
| P50 | 13.6 |
| P75 | 14.6 |
| P90 | 16.5 |
| P95 | 17.2 |
12.5 13 13.6 14.6 17.2
P5 P25 P50 P75 P95
Data and Methodology
- Dataset
- NHANES 2017-March 2020 Pre-Pandemic ( NHANES 2017-2020 2020 , Survey-weighted percentiles from pre-pandemic MEC sample)
- Survey years
- 2017-2020
- Sample size
- 659 participants
- Reference population
- US civilian non-institutionalized females aged 40-49 from NHANES 2017-March 2020. Includes the full population (not restricted to healthy individuals) to reflect the population distribution.
- Exclusion criteria
-
- Missing RDW measurement (LBXRDW)
- Missing or zero MEC sample weight (WTMECPRP)
- Age outside 40-49 range
- Notes
- Percentiles computed using survey-weighted analysis (WTMECPRP weight from the pre-pandemic combined file). RDW measured as LBXRDW in percent.