From: A hybrid decision support model to discover informative knowledge in diagnosing acute appendicitis
Characteristics | AA* (n = 152) | Control** (n = 174) | p value |
---|---|---|---|
Age, yrs†| 36.57 ± 21.31 | 43.05 ± 20.86 | 0.003††|
Gender | Â | Â | 0.021 |
Male | 77 (50.7%) | 66 (37.9%) | Â |
Female | 75 (49.3%) | 108 (62.1%) | Â |
Chief complaints |  |  | 0.000††|
abdominal | 76 (50.0%) | 109 (62.6%) | Â |
left upper quadrant (LUQ) | 0 (0.0%) | 1 (0.6%) | Â |
periumbilical area | 4 (2.6%) | 10 (5.7%) | Â |
right lower quadrant (RLQ) | 60 (39.5%) | 16 (9.2%) | Â |
left lower quadrant (LLQ) | 0 (0.0%) | 5 (2.9%) | Â |
lower abdominal | 5 (3.3%) | 18 (10.3%) | Â |
right upper quadrant (RUQ) | 6 (3.9%) | 15 (8.6%) | Â |
upper abdominal | 1 (0.7%) | 0 (0.0%) | Â |
Urinalysis | Â | Â | Â |
Color | Â | Â | 0.407 |
amber | 10 (6.6%) | 6 (3.4%) | Â |
brown | 1 (0.7%) | 1 (0.6%) | Â |
straw | 140 (92.1%) | 167 (96.0%) | Â |
yellow | 1 (0.7%) | 0 (0.0%) | Â |
S.G.†| 1.02 ± 0.01 | 1.02 ± 0.01 | 0.106 |
pH†| 6.61 ± 0.93 | 6.43 ± 0.92 | 0.086 |
Albumin | Â | Â | 0.412 |
negative | 127 (83.6%) | 151 (86.8%) | Â |
positive | 25 (16.4%) | 23 (13.2%) | Â |
Glucose |  |  | 0.000††|
negative | 116 (76.3%) | 170 (97.7%) | Â |
positive | 36 (23.7%) | 4 (2.3%) | Â |
Ketone |  |  | 0.000††|
negative | 98 (64.5%) | 149 (85.6%) | Â |
positive | 54 (35.5%) | 25 (14.4%) | Â |
O.B. | Â | Â | 0.578 |
negative | 104 (68.4%) | 114 (65.5%) | Â |
positive | 48 (31.6%) | 60 (34.5%) | Â |
Urobilinogen, E.U./dL†| 0.52 ± 1.49 | 0.22 ± 0.54 | 0.020 |
Bilirubin | Â | Â | 0.983 |
negative | 139 (91.4%) | 159 (91.4%) | Â |
positive | 13 (8.6%) | 15 (8.6%) | Â |
Nitrite | Â | Â | 0.689 |
negative | 150 (98.7%) | 170 (97.7%) | Â |
positive | 2 (1.3%) | 4 (2.3%) | Â |
WBC1 | Â | Â | 0.345 |
negative | 99 (65.1%) | 122 (70.1%) | Â |
positive | 53 (34.9%) | 52 (29.9%) | Â |
RBC | Â | Â | 0.972 |
negative | 53 (34.9%) | 61 (35.1%) | Â |
positive | 99 (65.1%) | 113 (64.9%) | Â |
WBC2 | Â | Â | 0.936 |
negative | 11 (7.2%) | 13 (7.5%) | Â |
positive | 141 (92.8%) | 161 (92.5%) | Â |
Ep. Cell | Â | Â | 0.303 |
negative | 30 (19.7%) | 26 (14.9%) | Â |
positive | 122 (80.3%) | 148 (85.1%) | Â |
Cast | Â | Â | 0.284 |
negative | 151 (99.3%) | 174 (100.0%) | Â |
positive | 1 (0.7%) | 0 (0.0%) | Â |
Other | Â | Â | 0.184 |
negative | 147 (96.7%) | 172 (98.9%) | Â |
positive | 5 (3.3%) | 2 (1.1%) | Â |
Crystal | Â | Â | 0.383 |
negative | 151 (99.3%) | 171 (98.3%) | Â |
positive | 1 (0.7%) | 3 (1.7%) | Â |