Table 4.

Hospitalization rate of children under 5 y old due to pneumonia in the study areas in 2012.

	Population size	Hospitalized cases	Hospitalization rate (%)	χ2	P
Onset age
0-	1272	35	2.75	37.74a	< 0.0001
1-	1604	33	2.06
2-	1630	18	1.10
3-	1622	17	1.05
4-	1683	6	0.36
Gender
Male	4355	68	1.56	1.97	0.1604
Female	3456	41	1.19
Residency type
Urban	1079	16	1.48	0.07	0.7921
Rural	6732	93	1.38
Total	7811	109	1.40

Note: a: trend Chi square value.