Risk factors for intussusception in children with Henoch-Schönlein purpura: A case-control study

Table 1 Baseline patient characteristics

Variable	Intussusception group (n = 60)	Non-intussusception group (n = 100)	P value
Sex, n (%)			0.383
Male	33 (55.0)	62 (62.0)
Female	27 (45.0)	38 (38.0)
Age at onset, n (%)			< 0.001
< 6 yr	27 (45.0)	9 (9.0)
≥ 6 yr	33 (55.0)	91 (91.0)
Duration of disease (d), n (%)			0.02
≤ 28	58 (96.7)	85 (85.0)
> 28	2 (3.3)	15 (15.0)
First episode, n (%)			0.017
Yes	57 (95.0)	80 (80.0)
No	3 (5.0)	20 (20.0)
GI tract malformation, n (%)			0.117
Yes	3 (5.0)	1 (1.0)
No	57 (95.0)	99 (99.0)
Receiving glucocorticoid therapy within 72 h of GI symptom emergence, n (%)			< 0.001
Yes	20 (33.3)	77 (77.0)
No	40 (66.7)	23 (23.0)
Vomiting, n (%)			< 0.001
Yes	39 (65.0)	27 (27.0)
No	21 (35.0)	73 (73.0)
Hematemesis, n (%)			0.204
Yes	7 (11.7)	6 (6.0)
No	53 (88.3)	94 (94.0)
Hematochezia, n (%)			< 0.001
Yes	33 (55.0)	14 (14.0)
No	27 (45.0)	86 (86.0)
White blood cell count, n (%)			0.014
< 10.0 × 109/L	21 (35.0)	55 (55.0)
≥ 10.0 × 109/L	39 (65.0)	45 (45.0)
Neutrophil count, n (%)			0.085
< 10.0 × 109/L	32 (53.3)	67 (67.0)
≥ 10.0 × 109/L	28 (46.3)	33 (33.0)
Platelet count, n (%)			0.168
< 300.0 × 109/L	11 (18.3)	28 (28.0)
≥ 300.0 × 109/L	49 (81.7)	72 (72.0)
C-reactive protein level, n (%)			0.072
≤ 8 mg/L	26 (43.3)	58 (58.0)
> 8 mg/L	34 (56.7)	42 (42.0)
Erythrocyte sedimentation rate, n (%)			0.388
≤ 15 mm/h	50 (83.3)	73 (73.0)
> 15 mm/h	10 (16.7)	27 (27.0)
D-dimer level, n (%)			< 0.001
< 1 mg/L	7 (11.7)	70 (70.0)
≥ 1 mg/L	53 (88.3)	30 (30.0)

GI: Gastrointestinal.