Efficacy and safety of early oral feeding in postoperative patients with upper gastrointestinal tumor: A systematic review and meta-analysis

Table 4 Eliminated studies in sensitivity study of postoperative exhaust time

Ref.	Year	Sample size, n		Postoperative exhaust time in h, mean ± SD		Eliminate reason
		EOF	TOF	EOF	TOF
Wang et al[15]	2017	38	42	73.5 ± 6.3	80.1 ± 8.7	High risk of bias
Yang et al[18]	2013	25	25	78.8 ± 8.4	87.1 ± 11.3	High risk of bias
Mi et al[11]	2012	30	30	79.9 ± 9.5	86.6 ± 8.7	High risk of bias
Li et al[17]	2014	50	50	67.3 ± 7.9	84.6 ± 8.7	High risk of bias
Yu et al[16]	2016	72	67	2.1 ± 1.21	3.3 ± 1.51	No data as mean ± SD
Sun et al[22]	2018	140	140	2 (2-3)1,2	3 (2-3)1,2	No data as mean ± SD
Mahmoodzadeh et al[23]	2015	54	55	3 (2-3)1,2	4 (3-4)1,2	No data as mean ± SD
Shimizu et al[21] (DG)	2018	70	84	2 (1-3)1,3	2 (1-6)1,3	No data as mean ± SD
Shimizu et al[21] (TG)		32	30	2 (1-4)1,3	3 (1-6)1,3	No data as mean ± SD

¹The value is in days.

²Medians (lower quartile - upper quartile).

³Median (range).

DG: Distal gastrectomy; EOF: Early oral feeding; TG: Total gastrectomy; TOF: Traditional oral feeding.