Table 7.

Logistic regression analysis of risk factors for conversion

Parameter	Fully LLR (n = 248)	Conversions (n = 17)	HR	95% CI	P
Age ≥60 years	125 (50.4%)	10 (58.8%)	1.48	0.36–6.0	0.58
Gender (male)	116 (46.8%)	10 (58.8%)	1.94	0.53–7.2	0.32
Previous operation	152 (61.3%)	15 (88.2%)	4.9	0.87–27	0.07
Major hepatectomy	39 (15.7%)	7 (41.2%)	3.34	0.94–11.9	0.02
Lesion number (>1)	75 (31.6%)	7 (41.2%)	1.26	0.40–3.9	0.69
Tumour size ≥50 mm	91 (38.2%)	5 (29.4%)	0.58	0.16–2.0	0.39
Diagnosis (malignant)	152 (61.3%)	11 (64.7%)	0.24	0.05–1.2	0.09
Neo-adjuvant chemotherapy	96 (38.7%)	8 (47.1%)	0.50	0.14–2.7	0.52
BMI (>28)	120 (48.4%)	9 (52.9%)	1.15	0.35–3.7	0.78
Repeat hepatectomy	21 (8.5%)	2 (11.8%)	1.25	0.23–6.7	0.79
Posterior–superior segments	89 (35.9%)	13 (76.5%)	5.87	1.45–19.8	0.01
Resection close to major HV	113 (45.7%)	7 (41.2%)	0.72	0.18–2.9	0.65
Learning curve (≤60 LLR)	55 (22.2%)	4 (23.5%)	2.48	0.57–10.8	0.22
Multivariate analysis
Posterior–superior segments	–	–	5.9	1.8–18.8	0.003

HR, hazard ratio; CI, confidence interval; BMI, body mass index; HV, hepatic veins; LLR, laparoscopic liver resection.