Table 2.

Univariate analysis of risk factors for propofol injection pain

Factors	Pain (+)	Pain (-)		Total
		%	%	%	χ2	p*
Preoperative anxiety
Present	89.20	25.80	60.30	28.305	<0.001
Absent	10.80	74.20	39.70
Type D personality
Present	94.60	61.30	79.40	11.443	0.001
Absent	5.40	38.70	20.60
Venous cannulation pain
Present	94.60	48.40	73.50	18.504	<0.001
Absent	5.40	51.60	26.50
Gender
Female	59.50	16.10	39.70	13.229	<0.001
Male	40.50	83.90	60.30
Depression
Present	18.90	35.50	26.50	2.328	0.123
Absent	81.10	64.50	73.50
History of general anesthesia
Present	54.10	58.10	55.90	0.110	0.740
Absent	45.90	41.90	44.10
Marital status
Married	64.90	67.70	66.20	0.062	0.803
Single	35.10	32.30	33.80
Smoking
Present	40.50	25.80	33.80	1.636	0.201
Absent	59.50	74.20	66.20
Educational status
College graduate	64.90	58.10	61.80	0.330	0.565
Not a college graduate	35.10	41.90	38.20
Age
40>	56.80	67.70	61.80	0.862	0.353
40<	43.20	32.30	38.20

*: p-value for Chi-square test.