The Use of FTIR-ATR Spectrometry for Evaluation of Surgical Resection Margin in Colorectal Cancer: A Pilot Study of 56 Samples

Table 2

FTIR spectrum comparisons of Parts A, B, C, and D (t-test results).

Variable	Part A		Part B		Part C		Part D		t (𝑡^′)	p
	n	Mean ± SD	n	Mean ± SD	n	Mean ± SD	n	Mean ± SD
𝐼/𝐼
𝐼1550/𝐼1080	14	5.25±1.26	14	5.43±1.03	14	6.83±1.34	14	6.56±0.89	−2.631	0.001**
𝐼1550/𝐼1460	14	5.93±1.42	14	5.60±1.35	14	4.84±1.08	14	4.67±1.20	2.216	0.041*
𝐼1080/𝐼1460	14	1.08±0.43	14	0.95±0.33	14	0.65±0.27	14	0.71±0.22	2.095	0.036*

I stands for the intensity of band; ^∗𝑝<0.05; ^∗∗𝑝<0.01.