a marginal trendp = 0.072
Notably, the previously significant global strength difference between the clinical and subclinical groups became non-significant after covariate adjustment (S = 0.740, p = 0.386; GS clinical = 4.563, GS subclinical = 3.823), as did the difference between the subclinical and HC groups, which showed a marginal trend after adjustment (S = 1.099, p = 0.072; GS subclinical = 3.823, GS HC = 4.922).