Correlation and influencing factors of preoperative anxiety, postoperative pain, and delirium in elderly patients undergoing gastrointestinal cancer surgery

Table 5 Multiple linear regression analysis of preoperative high anxiety, postoperative high pain, and postoperative delirium

Dependent variable	independent variable	B	Std error	Beta	t	P	VIF	R²	adjustd R²	F
Preoperative high anxiety	constant	−0.491	0.542	–	− 0.906	0.367	–	0.181	0.152	6.333
	age	0.010	0.007	0.118	1.387	0.168	1.017
	type of cancer	−0.134	0.048	−0.272	−2.785	0.006*	1.337
	method of Anesthesia and analgesia	0.000	0.029	0.000	0.001	0.999	1.176
	surgical approach	0.214	0.091	0.221	2.339	0.021*	1.248
Postoperative high pain	constant	0.582	0.149	–	3.901	0.000	–	0.182	0.161	8.617
	type of cancer	−0.065	0.060	−0.104	−1.090	0.278	1.297
	Method of Anesthesia and analgesia	−0.017	0.037	−0.042	−0.460	0.646	1.156
	Preoperative high anxiety	0.465	0.114	0.366	4.060	0.000**	1.153
Postoperative delirium	constant	−3.279	0.474	–	−6.917	0.000	–	0.390	0.368	18.354
	age	0.048	0.007	0.525	6.929	0.000**	1.082
	occupation	0.055	0.054	0.077	10.27	0.307	1.066
	preoperative high anxiety	0.234	0.090	0.209	2.604	0.010*	1.208
	postoperative high pain	0.057	0.071	0.064	0.793	0.430	1.228

B = partial regression coefficient, Std error = standard error, Beta = standardized regression coefficient, t = Students t test; VIF = variance inflation factor, R² = coefficient of determination, F = equality of variances. *P<0.05, **P<0.001

ISSN: 1471-2253