Pre- and intra-operative predictors of postoperative hospital length of stay in patients undergoing radical prostatectomy for prostate cancer in China: a retrospective observational study

Table 2 The results of multiple linear regression analysis

Variables	Unstandardized coefficient^a	Standardized coefficient (β)^a	t value	P value
Operation type
Robot assisted	REF	–	–	–
Open	−0.017	−0.325	−7.259	< 0.001
Laparoscopic	−0.008	−0.146	−3.730	< 0.001
Blood loss (L)	−0.023	−0.205	−5.438	< 0.001
Gleason score
≤ 6	REF	–	–	–
7	−0.003	−0.061	− 1.668	0.096
≥ 8	−0.009	−0.152	−4.115	< 0.001
White blood count (× 10⁹/L)	0.002	0.089	2.775	0.006
Preoperative PSA	8.222E-6	0.007	0.208	0.835
Dysuresia	−0.002	−0.027	−0.826	0.409
Platelet count (× 10⁹/L)	2.816E-5	0.053	1.550	0.122
Serum calcium (mmol/L)	−0.012	− 0.058	−1.797	0.073
Blood glucose (mmol/L)	0.001	0.043	1.352	0.177

REF, referent; —, not applicable
Bold items indicate factors significantly associated with LOS (p values < 0.05)
^anegative coefficients corresponding to longer LOS because of the reciprocal transformation

ISSN: 1471-2490