Table 3. Results of bivariate analysis on several variables of infant dyschezia.

Variable		Infant dyschezia			OR (95% CI)	p-value
		Yes	No	Total
Sex
	Male	17	141	158	0.808 (0.406–1.608)	0.543
	Female	20	134	154
Age						0.072
	0–3 mo	10	90	100	0.512 (0.224–1.173)	0.114
	4–6 mo	9	102	111	0.407 (0.174–0.953)	0.380
	7–9 mo	18	83	101	Reference
No. of children in the family						0.020
	Only child	30	130	160	3.115 (0.702–13.826)	0.135
	2–3 children	5	118	123	0.572 (0.105–3.107)	0.518
	≥4 children	2	27	29	Reference
Father’s age						0.961
	<20 yr	0	4	4	0.00 (0.00–0.00)	0.999
	21–31 yr	18	121	139	1.388 (0.382–5.041)	0.618
	31–40 yr	16	122	138	1.224 (0.334–4.490)	0.760
	>40 yr	3	28	31	Reference
Father’s education level						0.005
	Low level education	3	24	27	0.535 (0.149–1.918)	0.337
	Middle level education	9	144	153	0.268 (0.120–0.596)	0.010
	High level education	25	107	132	Reference
Father’s occupation						0.038
	Not working	0	4	4	0.00 (0.00–0.00)	0.999
	Low level education job	6	31	37	0.835 (0.305–2.286)	0.726
	Middle level education job	12	158	170	0.328 (0.152–0.708)	0.005
	High level education job	19	82	101	Reference
Mother’s age
	<20 yr	3	14	17	Reference	0.823
	21–31 yr	23	155	178	0.692 (0.185–2.596)	0.586
	31–40 yr	11	96	107	0.535 (0.133–2.156)	0.379
	>40 yr	0	10	10	0.00 (0.00–0.00)	0.999
Mother’s education level						0.010
	Low level education	2	30	32	0.276 (0.061–1.242)	0.093
	Middle level education	13	154	167	0.349 (0.168–0.727)	0.050
	High level education	22	91	113	Reference
Mother’s occupation						0.066
	Not working	15	154	169	0.362 (0.164–0.800)	0.012
	Low level education job	1	4	5	0.929 (0.096–8.982)	0.949
	Middle level education job	7	65	72	0.400 (0.150–1.063)	0.066
	High level education job	14	52	66	Reference
Family Income						0.025
	Low income	12	110	122	0.390 (0.168–0.903)	0.028
	Middle income	11	115	126	0.342 (0.145–0.805)	0.014
	High income	14	50	64	Reference
First onset of meconium						0.211
	Uncertain	7	74	81	0.347 (0.106–1.140)	0.081
	<24 hr	24	179	203	0.492 (0.181–1.334)	0.163
	>24 hr	6	22	28	Reference
History of hospitalization
	Never	35	272	307	0.193 (0.031–1.195)	0.077
	1–2 times	2	3	5
Diet						0.005
	Breastmilk	9	122	131	0.273 (0.120–0.618)	0.002
	Formula milk	1	19	20	0.195 (0.250–1.531)	0.120
	Breastmilk+formula milk	4	49	53	0.302 (0.099–0.923)	0.036
	Complementary foods	23	85	108	Reference
Complimentary foods
	Yes	23	85	108	3.672 (1.802–7.484)	<0.001
	No	14	190	204
Social/emotional disorders
	Yes	21	62	83	4.509 (2.219–9.164)	<0.001
	No	16	213	229

OR: odds ratio, CI: confidence interval.