Table 3.

List of historical studies involving a single surgeon

Authors	Study period	Background	Patients (n) Groups inclusion criteria	Agea (years)/BMIa (kg/m2)	Learning curve	Mean op time (min)		Complications (%)
						Pre-LC	Post-LC	Pre-LC	Post-LC
Agrawal et al. [9]	10–11	Advanced scope fellowship laparoscope bariatric	74 1 group primary procedures	45.1 47.7	Not required	160	n/a	1.4	n/a
Shen et al. [27]	09–11	Advanced scope fellowship	60 2 groups IFSO-APCcriteriab	34.2 41.5	30	120	80	26.7	6.7
Shin et al [23]	03	Advanced scope fellowship	100 2 groups unselective	42.6 47.6	50	113	73	32	8
Oliak et al. [21]	99–01	Advanced scope	225 3 groups primary procedures	40 51	75	189	125	32	15
Huang et al. [28]	05–07	Advanced scope	100 2 groups unselective	31.2 43	50	217	105	15	3
Nguyen et al. [24]	n/a	Advanced scope	150 2 groups unselective	40 47	75	250	n/a	12	1
Andrew et al. [22]	02–04	Open bariatric	201 3 groups unselective	37 49.2	70	145	118	19.4	11.9
Ballesta-Lopez et al. [26]	00–04	Advanced scope LAP BAND®	600 6 groups unselective	38.7 44.4	100	166	109	29.2	14
Current study	16–19	Advanced scope laparoscope bariatric	108 3 groups primary procedures	37.8 36.1	30 +	115	96	2.8	2.6

Op operation, BMI body mass index, n/a no data available

^aMean

^bIFSO-APC criteria refer to the International Federation for the Surgery of Obesity and Metabolic Disorders Asia Pacific Chapter criteria[11]