Minimally invasive versus open Transforaminal lumbar Interbody fusion in obese patients: a meta-analysis

Table 1 Characteristics of studies included in the meta-analyses

Study	Study	No. of patients	Mean follow	Meanage	Gender (% male)	Mean BMI (kg/m2)	Diagnosis	NOS score
Study	design	(MI: Open)	up (mo)	(y) (MI: Open)	(MI: Open)	(MI: Open)
Adogwa [24], USA	retrospective cohort study	40/108	24	56.62/56.12	50/47	34.48/35.63	DDD, Spondylolisthesis	7
Wang [29], China	retrospective cohort study	35/37	6	51.3/52.3	54/68	34.8/33.7	LDP	6
Lau [25], USA	retrospective cohort study	78/49	NP	50.5/57.4	46.2/42.1	36.9/37.2	spondylolisthesis, DDD, LDH, stenosis, deformity	7
Wang [28], China	prospective cohort study	42/39	36.1	56.4/54.2	69.1/69.2	29.5/28.3	spondylolisthesis,	6
Terman [27], USA	retrospective cohort study	53/21	30	52.4/58.2	45/62	35.2/33.8	spondylolisthesis, DDD, stenosis, LDH	7
Zhang [30], China	retrospective cohort study	32/24	6	42/45	41/39	31.3/33.2	LDH	5
Mao [26], China	retrospective cohort study	46/33	6	40.8/43.3	41.3/36.3	32.8/33.6	LDH	5

DDD Degenerative disc disease, LDH Lumbar disc herniation, NOS Newcastle Ottawa Scale, MI Minimally invasive surgery, Open Open surgery, NP Not provided, mo Month, y Year

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