Table 3.

The univariate analysis of postoperative pain

Related factors	Case	NRS score 24 h after operation	t	P
Gender
male	76	2.11±0.42	1.781	0.077
female	61	2.25±0.50
Age
≤50	73	2.08±0.69	1.765	0.080
>50	64	2.29±0.70
Degree of education
High school and below	81	2.35±0.87	1.685	0.094
College or above	56	2.11±0.74
Smoking history
Yes	36	2.22±0.39	1.539	0.126
No	101	2.09±0.45
Number of implants
single	110	1.78±0.49	7.229	0.000
Multiple	27	2.55±0.52
Take painkillers after operation
Yes	89	1.47±0.30	19.564	0.000
No	48	2.76±0.47
Operation time
<1 h	95	1.47±0.43	15.160	0.000
≥1 h	42	2.60±0.33
Experience of implant surgery
Yes	25	2.05±0.66	1.759	0.081
No	112	2.26±0.51
Postoperative ice compress
Yes	103	2.10±0.52	1.509	0.134
No	34	2.26±0.47
Preoperative anxiety
Yes	39	2.29±0.55	1.678	0.096
No	98	2.08±0.70