Table 2.

Heterogeneity of the meta-analysis on prevalence of gastrointestinal symptoms by symptoms category and virus (sub)-type for the children population

Meta-analysis	Influenza virus (sub)-type	Number of studies	Prevalence	I 2 Statistic[IC]	Q Statistic (p-value)
Gastrointestinal symptoms	A(H3N2)	3	31.6 [36.33–43.15]	95.55 % [90.27–97.98]	45.1 (p < 0.0001)
	A(H1N1)	1	/
	A(H1N1)pdm09	2	46.3 [34.24–58.7]	96.75 % [47.69–96.64]	7.54(p = 0.0060)
	B	1	/
Vomiting	A(H3N2)	2	37.5 [13.54–65.36]	89.70 % [61.9–97.21]	9.7 (p = 0.0018)
	A(H1N1)pdm09	1	/
	B	2	25.6 [14.7–38.35]	19.27 % [0–0]	1.23(p = 0.2657)
Diarrhea	A(H3N2)	2	19.6 [9.61–32.13]	60.97 % [0–90.93]	2.57 (p = 0.1095)
	B	2	14.42 [7.48–23.52]	0 % [0.00–0.00]	0.06 (p = 0.8010)
Abdominal pain	A(H3N2)	1	/
	B	1	/