Quantitative analysis with load–displacement ratio measured via digital arthrometer in the diagnostic evaluation of chronic ankle instability: a cross-sectional study

Table 1 Demographic characteristics of subjects by group^*

Variable*	Control (n = 160)	CAI (n = 153)	p value
Male sex^** (%)	73 (45.6%)	83 (54.2%)	0.094
Age, y	30.49 \(\pm\) 8.11	30.84 \(\pm\) 9.43	0.746
BMI	22.11 \(\pm\) 3.01	22.76 \(\pm\) 2.34	0.047
Total sprains, n	NA	3.65 \(\pm\) 1.82
Tested side, left^** (%)	78 (48.8%)	79 (51.6%)	0.317
Time since last sprain, mo	NA	17.94 \(\pm\) 15.87
CAIT score	29.93 \(\pm\) 0.25	19.75 \(\pm\) 5.78	< 0.001

CAI chronic ankle instability, BMI body mass index, NA not available, CAIT cumberland ankle instability tool, SD standard deviation
^*Values are presented as mean \(\pm\) SD unless specified otherwise; the level of significance is set a priori at p < 0.05
^**Statistical differences are calculated by Pearson χ² test

ISSN: 1749-799X