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Table 1 Inclusion data of patients of the four groups

From: Preoperative oral melatonin can reduce preoperative anxiety and postoperative analgesia in a dose-dependent manner

Variables Groups p value
P M1 M2 Z
Age (years) 46.6±9.3 45±9 47.4±6.6 46.4±5.5 0.621
Sex
 Males 22 (62.9%) 27 (77.1%) 25 (71.4%) 29 (82.9%) 0.269
 Females 13 (37.1%) 8 (22.9%) 10 (28.6%) 6 (17.1%)
Education level
 Post-graduate 5 (14.3%) 4 (11.4%) 3 (8.6%) 2 (40%) 0.749
 College 9 (25.7%) 10 (28.6%) 12 (34.3%) 11 (31.4%)
 High school 11 (31.4%) 8 (22.9%) 13 (37.1%) 8 (22.8%)
 Sec school 4 (11.4%) 5 (14.3%) 2 (5.7%) 7 (20%)
 Illiterate 6 (17.2%) 8 (22.9%) 5 (14.3%) 7 (20%)
Marital status
 Single 9 (25.7%) 11 (31.4%) 10 (28.6%) 7 (20%) 0.861
 Married 21 (60%) 22 (62.8%) 24 (68.5%) 28 (80%)
 Divorced 3 (8.6%) 1 (2.9%) 0 0
 Widow 2 (5.7%) 1 (2.9%) 1 (2.9%) 0
Body weight (kg) 83.7±8.1 86.9±6.1 87.5±8 85.3±7.2 0.136
Body height (cm) 167.6±3.9 168.7±3.1 168.8±3.5 168±3.3 0.389
Body mass index (Kg/m2) 29.8±2.6 30.5±2.4 31±2.9 30.2±2.1 0.208
ASA
 Grade I 32 (91.4%) 30 (85.7%) 33 (94.3%) 31 (88.6%) 0.662
 Grade II 3 (8.6%) 5 (14.3%) 2 (5.7%) 4 (11.4%)
Hernia side
 Right 14 (40%) 12 (34.3%) 10 (28.6%) 16 (45.7%) 0.485
 Left 21 (60%) 23 (65.7%) 25 (71.4%) 19 (54.3%)
Associated medical diseases
 CAD 2 (5.6%) 1 (2.9%) 1 (2.9%) 0 0.838
 DM 3 (8.6%) 3 (8.6%) 4 (11.4%) 3 (8.6%)
 Chest 1 (2.9%) 3 (8.6%) 1 (2.9%) 2 (5.6%)
 Liver 1 (2.9%) 2 (5.6%) 2 (5.7%) 1 (2.9%)
 No 28 (80%) 26 (74.3%) 27 (77.1%) 29 (82.9%)
  1. Data are presented as mean, standard deviation, numbers, and percentages. p <0.05 indicates significant difference; p>0.05 indicates non-significant difference
  2. Sec school Secondary school graduate, CAD Coronary artery disease, DM Diabetes mellitus; p, value indicates the significance of variance between groups according to one-way ANOVA test for parametric variables and Chi-square test with Yates correction for non-parametric numerical values