Table 4. In-hospital recurrence and post-discharge recurrence of pediatric intussusception.

Accompanied	Only one admission or one hospital visit	Revisiting a hospital or re-admission (post-discharge recurrence)	Total patients
No in-hospital recurrence	25,864 (95.0)	2,738 (84.9)	28,602 (93.9)
In-hospital recurrence	1,354 (5.0)	488 (15.1)	1,842 (6.1)
	27,218 (100.0)	3,226 (100.0)	30,444 (100.0)

Values are presented as number (%).

Post-discharge recurrence was defined as revisiting a hospital or re-admission for intussusception. In-hospital recurrence was defined as a relapse in one admission or one hospital visiting period. The post-discharge recurrence rate was 10.6% (3,226/30,444) and the in-hospital recurrence rate was 6.1% (1,842/30,444). The total recurrence rate (children with post-discharge recurrence and/or in-hospital recurrence) was 15.0% (4,580 [2,738+1,842]/30,444). Patients with post-discharge recurrence had a higher incidence of in-hospital recurrence than children with only one admission/hospital visit for intussusception

(15.1% vs. 5.0%, p<0.001).

The p-value was calculated using the chi-square test.