Table II.
Estimated prevalence of PN in USA stratified by age∗
| Age group (years) |
||||||
|---|---|---|---|---|---|---|
| <15 | 15-24 | 25-44 | 45-64 | >65 | ||
| 2010 NAMCS ICD-9† | n | 7949 | 3717 | 24,923 | 32,844 | 59,596 |
| % | 6.2 | 2.9 | 19.3 | 25.5 | 46.2 | |
| 2015 NAMCS ICD-9† | n | 2919 | 16,914 | 38,076 | 30,164 | 79,635 |
| % | 1.7 | 10.1 | 22.7 | 18.0 | 47.5 | |
ICD-9, International Classification of Diseases, Ninth Revision; NAMCS, National Ambulatory Medical Care Survey; PN, prurigo nodularis; USA, United States of America.
∗
Age-stratified data were only available for the NAMCS ICD-9 codes.
†
Realistic case scenario.