Table 3. Comparison of tumor texture analysis parameters between TRG1-2 and TRG3-5 groups.

	TRG
Parameters	TRG1–2(n = 30)	TRG3–5(n = 29)	p
pre-mean value	226.42(165.19–284.39)	239.08(170.24–288.02)	0.50
pre-SD	40.72(32.42–61.49)	47.51(35.76–59.27)	0.40
pre-skewness	0.30(0.10–0.63)	0.22(0.04–0.40)	0.36
pre-kurtosis	3.5734(3.24–4.25)	3.24(2.88–3.69)	0.02
pre-uniformity	0.80(0.78–0.84)	0.79(0.77–0.82)	0.51
pre-energy	0.72(0.45–0.95)	0.49(0.40–0.84)	0.09
pre-entropy	0.88(0.20–1.52)	1.41(0.57–1.61)	0.12
early mean value	207.80(160.10–243.40)	208.80(169.88–310.87)	0.64
early SD	51.97(34.99–65.38)	44.67(36.47–63.98)	1.00
early skewness	0.21(0.01–0.49)	0.23(-0.08–0.35)	0.63
early kurtosis	3.11(2.75–3.55)	2.89(2.62–3.33)	0.16
early uniformity	0.77(0.72–0.81)	0.77(0.73–0.79)	0.89
early energy	0.70(0.52–0.91)	0.68(0.41–0.89)	0.52
early entropy	0.92(0.36–1.33)	1.04(0.45–1.61)	0.51

TRG indicates tumor regression grade. Data are reported as mean (95% Confidence Interval). Significant differences are represented in bold.