TY - JOUR
T1 - Sex and body mass index impact on digit circumference for Leeds Dactylitis Index calculation
AU - Silvério-António, M.
AU - Rodrigues, Ana Maria
AU - Teixeira, Filipa
AU - Tavares-Costa, José
AU - Bernardo, Alexandra
AU - Pimenta, Sofia
AU - Lagoas Gomes, João
AU - Aguiar, Renata
AU - Videira, Taciana
AU - Pinto, Patrícia
AU - Santos, Helena
AU - Sequeira, Graça
AU - Teixeira, Lídia
AU - Ribeiro, Ruy Miguel
AU - Fonseca, João Eurico
AU - Vieira-Sousa, Elsa
PY - 2024/1
Y1 - 2024/1
N2 - 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.
AB - 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.
KW - Male
KW - Humans
KW - Female
KW - Body Mass Index
KW - Arthritis, Psoriatic/diagnosis
KW - Hand
KW - Regression Analysis
KW - Waist Circumference
U2 - 10.55563/clinexprheumatol/v78pc5
DO - 10.55563/clinexprheumatol/v78pc5
M3 - Article
C2 - 38179711
SN - 0392-856X
VL - 42
SP - 174
EP - 177
JO - Clinical and Experimental Rheumatology
JF - Clinical and Experimental Rheumatology
IS - 1
ER -