Skip to main content

Table 5 Comparison between BMI groups

From: How does cognitive function measured by the reaction time and critical flicker fusion frequency correlate with the academic performance of students?

RT Parameter

BMI

Analysis of Variance between groups **

Pairwise comparisons

(post hoc analysis ***)

P value

Underweight (n = 69)

Normal (n = 340)

Obese (n = 209)

F

P value

VRT (msec)

284.70 ± 96.45

249.92 ± 83.32*

257.39 ± 98.80

4.39

0.01

Normal–Underweight = 0.009

Normal–Obese–High = 0.51

Underweight–Obese = 0.09

ART

(msec)

232.95 ± 72.98

235.41 ± 84.97

239.83 ± 82.15

0.02

0.97

Normal–Underweight = 0.97

Normal–Obese–High = 0.99

Underweight–Obese = 0.97

CFFF (Hz)

26.15 ± 5.32

26.77 ± 5.58

26.72 ± 5.42

0.39

0.67

Normal–Underweight = 0.65

Normal–Obese–High = 0.72

Underweight–Obese = 0.99

  1. p < 0.05, **analysis of variance, ***Tukey’s test
  2. BMI body mass index