Fig. 2From: Patients with gastroenteric tumor after upper abdominal surgery were more likely to require rescue analgesia than lower abdominal surgeryEffect of tumor location and type of operation on frequent use of rescue analgesics after operation. Tumor location: A1: Single-factor analysis. A2: Add parameter operation type. A3: Add parameters operation type and intraoperative long-acting analgesics used. A4: Add parameters gender, age, BMI, operation time, operation type and intraoperative long-acting analgesics used. Type of operation: B1: Single-factor analysis. B2: Add parameter tumor location. B3: Add parameters tumor location and intraoperative long-acting analgesics used. B4: Add parameters gender, age, BMI, operation time, tumor location and intraoperative long-acting analgesics usedBack to article page