Diagnostic Accuracy Rates of Appendicitis Scoring Systems for the Stratified Age Groups

Table 3

Distributions of variables for age groups.

Variables		Age groups			value
		18–45 (n = 149)	46–65 (n = 34)	65+ (n = 20)	18–45 (n = 149)
Gender	Male	94 (63.1%)	21 (61.8%)	14 (70%)	0.811
	Female	55 (36.9%)	13 (38.2%)	6 (30%)
Nationality	Native	144 (96.6%)	33 (97.1%)	20 (100%)	0.851
	Foreign	5 (3.4%)	1 (2.9%)	0 (0%)
C-reactive protein		20.09 (6.04–71.95)	47 (12.13–47)	86.8 (42.6–146.13)	0.002
Leukocyte count		14600 (11100–17200)	13600 (11100–13600)	11150 (6380–15200)	0.049
Polymorphonuclear leukocyte ratio		78.4 (68–85.1)	80.75 (71.2–80.75)	76.25 (69.75–84.35)	0.692
Left shift in neutrophils	No	92 (61.7%)	16 (47.1%)	12 (60%)	0.303
	Yes	57 (38.3%)	18 (52.9%)	8 (40%)
Negative urine analysis	No	10 (6.7%)	2 (5.9%)	1 (5%)	1
	Yes	139 (93.3%)	32 (94.1%)	19 (95%)
Appendicitis in ultrasound imaging	Yes	136 (91.3%)	31 (91.2%)	18 (90%)	1
	No	13 (8.7%)	3 (8.8%)	2 (10%)
Right lower quadrant pain	Yes	146 (98%)	32 (94.1%)	19 (95%)	0.386
	No	3 (2%)	2 (5.9%)	1 (5%)
Severity of the pain	Mild	30 (20.1%)	6 (17.6%)	1 (5%)	0.297
	Moderate	67 (45%)	19 (55.9%)	9 (45%)
	High	52 (34.9%)	9 (26.5%)	10 (50%)
Pain outside the right lower quadrant	No	113 (75.8%)	26 (76.5%)	10 (50%)	0.05
	Yes	36 (24.2%)	8 (23.5%)	10 (50%)
Increasing pain	No	80 (53.7%)	18 (52.9%)	7 (35%)	0.322
	Yes	69 (46.3%)	16 (47.1%)	13 (65%)
Pain transition from umbilicus to lower right quadrant	No	65 (43.6%)	13 (38.2%)	15 (75%)	0.02
	Yes	84 (56.4%)	21 (61.8%)	5 (25%)
Vomiting	No	87 (58.4%)	25 (73.5%)	12 (60%)	0.271
	Yes	62 (41.6%)	9 (26.5%)	8 (40%)
Loss of appetite	No	41 (27.5%)	11 (32.4%)	7 (35%)	0.737
	Yes	108 (72.5%)	23 (67.6%)	13 (65%)
Duration of symptoms	<24 hours	86 (57.7%)	14 (41.2%)	8 (40%)	0.042
	24–48 hours	38 (25.5%)	7 (20.6%)	5 (25%)
	>48 hours	25 (16.8%)	13 (38.2%)	7 (35%)
Right lower quadrant pain with coughing	No	46 (30.9%)	13 (38.2%)	6 (30%)	0.658
	Yes	103 (69.1%)	21 (61.8%)	14 (70%)
Bowel sounds with auscultation	None	15 (10.1%)	3 (8.8%)	2 (10%)	0.9
	Normal	127 (85.2%)	30 (88.2%)	18 (90%)
	Hyperactive	7 (4.7%)	1 (2.9%)	0 (0%)
Tenderness in right lower quadrant	No	4 (2.7%)	2 (5.9%)	1 (5%)	0.663
	Yes	145 (97.3%)	32 (94.1%)	19 (95%)
Rebound	No	36 (24.2%)	7 (20.6%)	4 (20%)	0.889
	Yes	113 (75.8%)	27 (79.4%)	16 (80%)
Rigidity	None	30 (20.1%)	5 (14.7%)	2 (10%)	0.333
	Mild	24 (16.1%)	6 (17.6%)	1 (5%)
	Moderate	61 (40.9%)	16 (47.1%)	8 (40%)
	High	34 (22.8%)	7 (20.6%)	9 (45%)
Rovsing sign	No	93 (62.4%)	23 (67.6%)	11 (55%)	0.657
	Yes	56 (37.6%)	11 (32.4%)	9 (45%)
Fewer	No	141 (94.6%)	33 (97.1%)	18 (90%)	0.624
	Yes	8 (5.4%)	1 (2.9%)	2 (10%)
Pathology	Acute appandicitis	130 (87.2%)	32 (94.1%)	18 (90%)	0.535
	Normal apendix vermiformis	19 (12.8%)	2 (5.9%)	2 (10%)