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Table 2 Distribution of features related to pregnant and non-pregnant women

From: Which appendicitis scoring system is most suitable for pregnant patients? A comparison of nine different systems

VariablePregnantNon-pregnantp valueEffect size*
Pathology
 Appendicitis65 (82.3%)66 (83.5%)1− 0.17
 Non-appendicitis14 (17.7%)13 (16.5%)
USG appendicitis
 Positive57 (72.2%)38 (48.1%)0.0020.246
 Negative22 (27.8%)41 (51.9%)
Pain severity
 Mild1 (1.3%)17 (21.5%)< 0.0010.691
 Moderate21 (26.6%)54 (68.4%)
 High57 (72.2%)5 (6.3%)
 Severe0 (0%)3 (3.8%)
Pain outside the right lower quadrant
 Positive5 (6.3%)11 (13.9%)0.186− 0.126
 Negative74 (93.7%)68 (86.1%)
Increased pain in follow-up
 Positive25 (31.6%)35 (44.3%)0.101− 0.13
 Negative54 (68.4%)44 (55.7%)
The spread of pain from the umbilicus    
 Positive26 (32.9%)48 (60.8%)< 0.001− 0.279
 Negative53 (67.1%)31 (39.2%)
Vomiting
 Positive28 (35.4%)11 (13.9%)0.0030.25
 Negative51 (64.6%)68 (86.1%)
Anorexia
 Positive31 (39.2%)48 (60.8%)0.007− 0.215
 Negative48 (60.8%)31 (39.2%)
Duration of symptoms
 < 24 h60 (75.9%)23 (29.1%)< 0.0010.471
 24–48 h12 (15.2%)40 (50.6%)
 > 48 h7 (8.9%)14 (20.3%)
Right lower quadrant pain with cough
 Positive36 (45.6%)48 (60.8%)0.560− 0.152
 Negative43 (54.4%)31 (39.2%)
Bowel sounds
 Increased/metallic1 (1.3%)4 (5.1%)< 0.0010.537
 Normal39 (49.4%)73 (94.2%)
 Absent39 (49.4%)2 (2.5%)
Defense
 Absent0 (0%)24 (30.4%)< 0.0010.693
 Mild1 (1.3%)10 (12.7%)
 Moderate26 (32.9%)41 (51.9%)
 Severe52 (65.8%)4 (5.1%)
Right lower quadrant sensitivity
 Positive79 (100%)78 (98.7%)10.08
 Negative0 (0%)1 (1.3%)
Rebound
 Positive75 (94.8%)58 (73.4%)< 0.0010.295
 Negative4 (5.1%)21 (26.6%)
Rovsing’s sign
 Positive37 (46.8%)16 (20.3%)0.0010.282
 Negative42 (53.2%)63 (79.7%)
Pyrexia
 Positive16 (20.3%)12 (15.2%)0.5320.066
 Negative63 (79.7%)67 (84.8%)
Left shift in neutrophils
 Positive47 (59.5%)23 (29.1%)< 0.0010.306
 Negative32 (40.5%)56 (70.9%)
Negative urinalysis
 Positive79 (100%)44 (55.7%)< 0.0010.533
 Negative0 (0%)35 (44.3%)
Follow-up time
 1 day69 (87.3%)53 (67.1%)0.0030.247
 2 days9 (11.4%)25 (31.6%)
 3 days1 (1.3%)1 (1.3%)
  1. The data are shown in number and percentage format
  2. *Phi or Cramer V coefficient is given as the effect size measure