. 2020 Nov 12;8(21):e14618. doi: 10.14814/phy2.14618

TABLE 1.

Correlations of initial critical fusion frequency (CFF) values with behavioral factors. None of the correlations was significant

Biological factor that is correlated with initial CFF	Mean value (SD)	Statistical results
Age (years)	23.9 (1.0)	t ₁₅ = 0.77, p = .45, r = .21
Weight (kg)	67 (15)	t ₁₅ = −0.86, p = .41, r = −.23
Height (cm)	173 (12)	t ₁₅ = −0.25, p = .81, r = −.07
Fatigue level	2.0 (0.9)	t ₁₅ = −0.07, p = .94, r = −.02
Initial pupil diameter (mm)	4.8 (1.4)	t ₁₅ = 0.6, p = .55, r = .17
Initial HR (bpm)	81 (12)	t ₁₅ = −0.13, p = .9, r = −.04