TABLE 7.

Egger’s regression analysis on publication bias for included studies on categorical outcomes.

Outcomes	t (95% CI)	P-value (2-tailed)
In-hospital mortality	0.928 (−1.512, 3.030)	0.406
Post-discharge mortality	1.444 (−3.319, 0.708)	0.179
Length of stay	0.747 (−4.509, 8.674)	0.479
Rehospitalisation	1.308 (−0.635, 2.299)	0.227
Discharge location	0.825 (−31.487, 15.205)	0.437
Postoperative myocardial infarction	4.485 (0.812, 3.449)	0.011
Postoperative renal failure	0.451 (−3.077, 4.092)	0.683
CVA and stroke	1.536 (−8.186, 1.457)	0.153
Hypertension	0.173 (−10.204, 11.994)	0.865
Cardiovascular disease	1.084 (−30.622, 11.043)	0.310
Peripheral vascular disease	1.014 (−1.483, 3.709)	0.344
Diabetes	1.345 (−5.583, 25.218)	0.196
Chronic obstructive pulmonary disease	0.280 (−7.952, 6.177)	0.785
Chronic kidney disease	1.353 (−77.970, 24.205)	0.234
Cognitive impairment	1.280 (−2.261, 6.128)	0.270
GFR/eGFR	0.370 (−37.307, 35.195)	0.774

CI, confidence interval.