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Table 2 Knowledge on nutrition and dietary supplements (O/KN&DS) and self-percieved competency on nutrition and dietary supplements (S/KN&DS) with differences among sports for O/KN&DS (Analysis of Variance – ANOVA), and S/KN&DS (Kruskal-Wallis test – KW)

From: What drives athletes toward dietary supplement use: objective knowledge or self-perceived competence? Cross-sectional analysis of professional team-sport players from Southeastern Europe during the competitive season

  O/KN&DSa S/KN&DS
Mean ± SD ANOVA (p) Poor Under-average Average Good/very good KW (p)
Basketball 4.69 ± 2.29   106 (46%) 16 (7%) 82 (36%) 24 (11%)  
Soccer 4.27 ± 2.19   196 (60%) 26 (8%) 94 (29%) 10 (3%)  
Volleyball 4.77 ± 2.13 1.88 48 (31%) 12 (8%) 68 (44%) 26 (17%) 48.03
Handball 4.81 ± 2.27 (0.13) 102 (50%) 28 (14%) 60 (29%) 16 (8%) (0.01)
  1. aTheoretical range for O/KN&DS was from 0 to 10, with 10 indicating the highest score (best knowledge)