Application of preoperative assessment of pain induced by venous cannulation in predicting postoperative pain in patients under laparoscopic nephrectomy: a prospective observational study

Table 2 Bivariate correlations between venous cannulation-induced pain score and outcome variables

	Correlation coefficient (r_s)
Postoperative maximum pain score at rest	0.64^*
Postoperative maximum pain score during coughing	0.65^*
Effective times of pressing	0.59^*
Additional consumption of sulfentanil, μg	0.58^*

ISSN: 1471-2253