Spondyloarthritis & psoriatic arthritis
Sex and body mass index impact on digit circumference for Leeds Dactylitis Index calculation
Authors' conclusion
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.
Study context
- Population
- Healthy Portuguese subjects; digit circumference of hands and foot measured with a dactylometermean body mass index (BMI) 24.8
- Participants
- 59 subjects
- Exposure
- Digit circumference by sex and by BMI category
- Womenn = 33
- Menn = 26
- Outcome
- Digit circumference and impact of sex and BMI, for calculation of the Leeds Dactylitis Index (LDI)
Methodological detailsStudent's t-test, One-way ANOVA, multiple linear regression
- Student's t-test
- One-way ANOVA
- Multiple linear regression
Main finding
As reported in the abstract
Mean digit circumference
- Differences in mean circumference between the four BMI categories statistically significant for all digits, large BMI effect size
- p<0.05
- Sex and BMI independent variables to predict mean digit circumference
- p<0.001
Observational data: associations, not effects.
Original publication
Sex and body mass index impact on digit circumference for Leeds Dactylitis Index calculation. Clin Exp Rheumatol. Published 6 May 2023. doi:10.
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