impact factor, citescore
logo
In press
In Press
Recent issue
Recent issue
Recent Supplement
Recent supplement
archives
Archives
articles free
Free to view
Search
Search
 

Brief Paper

 

Sex and body mass index impact on digit circumference for Leeds Dactylitis Index calculation

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16

 

  1. Serviço de Reumatologia e Doenças Ósseas Metabólicas, Hospital de Santa Maria, CHULN; Unidade de Investigação em Reumatologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Portugal. manuelqjsa@gmail.com
  2. Unidade de Reumatologia, Hospital dos Lusíadas, Lisbon, and CHRC, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Portugal.
  3. Serviço de Reumatologia, Unidade Local de Saúde do Alto Minho, Ponte de Lima, Portugal.
  4. Serviço de Reumatologia, Unidade Local de Saúde do Alto Minho, Ponte de Lima, Portugal.
  5. Serviço de Reumatologia, Centro Hospitalar São João, Porto, Portugal.
  6. Serviço de Reumatologia, Centro Hospitalar São João, Porto, Portugal.
  7. Serviço de Reumatologia, Centro Hospitalar de Tâmega e Sousa, Penafiel, Portugal.
  8. Serviço de Reumatologia, Unidade Local de Saúde do Nordeste, Bragança, Portugal.
  9. Serviço de Reumatologia, Centro Hospitalar de Vila Nova de Gaia, Vila Nova de Gaia, Portugal.
  10. Serviço de Reumatologia, Centro Hospitalar de Vila Nova de Gaia, Vila Nova de Gaia, Portugal.
  11. Instituto Português de Reumatologia, Lisboa, and Chronic Diseases Research Centre (CEDOC), EpiDoc Unit, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Portugal.
  12. Serviço de Reumatologia, Centro Hospitalar do Algarve, Faro, Portugal.
  13. Serviço de Reumatologia, Hospital Central do Funchal, Portugal.
  14. Laboratório de Biomatemática, Faculdade de Medicina da Universidade de Lisboa, Portugal.
  15. Serviço de Reumatologia e Doenças Ósseas Metabólicas, Hospital de Santa Maria, CHULN; Unidade de Investigação em Reumatologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Portugal.
  16. Serviço de Reumatologia e Doenças Ósseas Metabólicas, Hospital de Santa Maria, CHULN; Unidade de Investigação em Reumatologia, Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Portugal.

CER16811
2024 Vol.42, N°1
PI 0174, PF 0177
Brief Paper

Free to view
(click on article PDF icon to read the article)

PMID: 38179711 [PubMed]

Received: 06/05/2023
Accepted : 05/10/2023
In Press: 02/01/2024
Published: 24/01/2024

Abstract

OBJECTIVES:
To estimate digit circumference and the impact of sex and body mass index (BMI) for the calculation of the Leeds Dactylitis Index (LDI) in psoriatic arthritis (PsA) patients with bilateral dactylitis.
METHODS:
Digit circumference of the hands and the foot were measured with a dactylometer and were studied according to sex and BMI (divided in 4 weight categories) in healthy Portuguese subjects, using Student’s t-test and One-way ANOVA, respectively. The effect size of sex and BMI were calculated using Cohen’s d test and Eta squared, respectively. Multiple linear regression was used to calculate the effect of sex and BMI, as well as their interaction, to create a formula to predict digit circumference.
RESULTS:
Fifty-nine participants (33 women, 26 men) with a mean BMI of 24.8 were included. Men’s mean digit circumferences were statistically higher than those of women (p<0.001), with a large sex effect size in most of the digits. Differences in the mean circumference between the four BMI categories were statistically significant (p<0.05) for all digits, with a large BMI effect size. Sex and BMI were independent variables to predict mean digit circumference (p<0.001). A new tool (based on regression analysis) allowing to estimate the circumference of digits for males and females of different BMIs is presented.
CONCLUSIONS:
Our data allows the calculation of digit circumference for males and females of different BMIs in the Portuguese population; and shows that BMI influences digital circumference supporting BMI inclusion in LDI references tables.

DOI: https://doi.org/10.55563/clinexprheumatol/v78pc5

Rheumatology Article