Table 5.

Prevalence of stunting (as per Z-score) among the boys of two environmental setup.

Age in years	Flood affected							Non-affected							X2 values for stunting
	Total boys	HFAZ <  − 2SD		HFAZ <  − 3SD		Total stunt		Total boys	HFAZ <  − 2SD		HFAZ <  − 3SD		Total stunt
		N	%	N	%	N	%		N	%	N	%	N	%	Total	Severe
6	51	11	21.6	12	23.5	23	45.1	45	10	22.2	8	17.8	18	40.0
7	52	12	23.1	9	17.3	21	40.4	41	9	22.0	4	9.8	13	31.7
8	50	11	22.0	2	4.0	13	26.0	50	9	18.0	2	4.0	11	22.0
9	51	19	37.3	2	3.9	21	41.2	45	14	31.1	6	13.3	20	44.4
10	52	5	9.6	0	0.0	5	9.6	55	7	12.7	0	0.0	7	12.7
(6–10)	256	58	22.6	25	9.8	83	32.4	236	49	20.8	20	8.5	69	29.2	0.58,df = 1	0.02,df = 1
11	51	5	9.8	1	2.0	6	11.8	47	10	21.3	0	0.0	10	21.3
12	54	13	24.1	1	1.9	14	25.9	47	8	17.0	1	2.1	9	19.1
13	50	10	20.0	2	4.0	12	24.0	53	13	24.5	1	1.9	14	26.4
14	50	10	20.0	1	2.0	11	22.0	40	6	15.0	1	2.5	7	17.5
15	52	14	26.9	0	0.0	14	26.9	38	4	10.5	1	2.6	5	13.2
(11–15)	257	52	20.2	5	1.9	57	22.2	225	41	18.2	4	1.8	45	20.0	0.34,df = 1	0.00,df = 1
16	50	17	34.0	0	0.0	17	34.0	41	13	31.7	2	4.9	15	36.6
17	51	12	23.5	1	2.0	13	25.5	42	11	26.2	1	2.4	12	28.6
18	50	15	30.0	7	14.0	22	44.0	49	14	28.6	5	10.2	19	38.8
19	50	14	28.0	3	6.0	17	34.0	46	13	28.3	3	6.5	16	34.8
(16–19)	201	58	28.9	11	5.5	69	34.3	178	51	28.7	11	6.2	62	34.8	0.01,df = 1	0.08,df = 1
Total	714	168	23.5	41	5.7	209	29.3	639	141	22.1	35	5.5	176	27.5	0.49,df = 1	0.00,df = 1

*Significant at 5% level, HFAZ = Height-for-Age Z score.