Table 3.

Comparison of preoperative and postoperative hsa-miR-30d-5p in different groups

Characteristics	Preoperative (x̅ ± s)	Postoperative (x̅ ± s)	t	P
Gender
Male	23.963±0.691	21.857±3.462	3.198	0.004
Female	22.078±5.899	18.560±1.022	1.186	0.321
Age (years)
<60	22.108±2.220	20.020±2.095	1.653	0.174
≥60	24.042±3.924	21.675±3.681	2.939	0.008
T
<3	22.607±3.880	21.340±3.243	0.958	0.361
≥3	24.424±3.524	21.388±3.725	4.314	0.001
Lymphatic metastasis
None	24.873±3.841	22.513±3.723	2.166	0.048
Have	22.197±3.074	19.937±2.611	2.860	0.016
Position
Upper and Middle	23.988±3.372	20.886±2.704	3.412	0.004
Lower	23.241±4.291	22.069±4.411	1.176	0.267
Length
<3.5 cm	23.967±4.246	22.003±0.753	1.976	0.067
≥3.5 cm	23.272±2.912	20.444±1.211	3.126	0.011
Type
Ulcer-infiltrating	24.376±3.792	21.630±3.521	3.423	0.003
Others	21.707±2.834	20.621±3.476	0.823	0.442
Differentiation
Moderately and poorly	23.788±3.785	20.716±2.843	4.237	<0.001
High	23.224±3.747	24.238±4.823	0.989	0.378
Cigarette smoking
No	22.323±4.718	20.021±2.617	1.314	0.237
Yes	24.160±3.303	21.840±3.66	3.175	0.005
Drinking
No	22.663±3.723	19.737±2.526	2.060	0.073
Yes	24.194±3.705	22.184±3.649	2.610	0.018
Total	23.684±3.712	21.368±3.471	3.367	0.002