|Note. DFS: disease-free survival; DSS: disease-specific survival; HR: hazard ratio; NOS: Newcastle-Ottawa Scale; OR: odds ratio; OS: overall survival; “/” symbol: no results due to insufficient studies.|
Subgroup analysis was stratified by sample time. “Any” means including preoperative and postoperative sample time. “Preoperative” means including preoperative sample time only.
Subgroup analysis was stratified by cut-off value: 37 U/mL and other than 37 U/mL.
Subgroup analysis was stratified by study quality: NOS ≥6 and NOS <6.
OR was used as effect measure to assess the result of carbohydrate antigen 19-9 detection in different clinicopathologic characteristics.
The result was presented together with its 95% confidence intervals (in square brackets). Furthermore, statistics in the pooled analyses were presented.
HR was used as effect measure to assess the relationship between carbohydrate antigen 19-9 and prognosis.