Table 3. Breastfeeding Rates Among Infants Born in 2010 Estimated with Landline and Dual-Frame Sampling - National Immunization Surveys 2011 and 2012

 

			Ever Breastfed			Breastfed at 6 Months			Breastfed at 12 Months
State	Dual-frame	Landline	Dual-frame	Landline	Difference	Dual-frame	Landline	Difference	Dual-frame	Landline	Difference
	n	n	Percentage ±half 95% CI	Percentage ±half 95% CI	Percentage points ± half 95% CI	Percentage ± half 95% CI	Percentage ±half 95% CI	Percentage points ± half 95% CI	Percentage ± half 95% CI	Percentage ± half 95% CI	Percentage points ± half 95% CI
Alabama	250	124	64.6±7.6	60.4±10.1	4.2±2.2*	31.9±7.3	29.5±8.9	2.4±0.1*	12.9±4.8	14.2±6.6	-1.3±1.0*
Alaska	281	151	84.8±5.1	84.7±6.4	0.1±1.9	51.8±6.7	58.1±8.5	-6.3±5.6*	35.0±6.2	37.4±8.2	-2.4±2.9
Arizona	253	126	81.9±6.9	83.2±8.5	-1.3±4.3	50.6±7.8	49.7±11.6	0.9±5.7	28.6±6.9	25.5±10.1	3.1±3.8
Arkansas	260	125	63.0±7.9	57.7±11.1	5.3±2.2*	29.1±6.8	24.2±8.8	4.9±2.6*	12.0±4.2	14.4±7.0	-2.4±0.7*
California	278	156	88.6±5.6	91.6±6.0	-3.0±2.1*	67.9±7.7	71.3±8.8	-3.4±1.3*	42.1±8.1	45.3±10.4	-3.2±1.7*
Colorado	255	139	79.5±8.1	89.1±6.2	-9.6±10.2	50.4±9.1	56.5±13.0	-6.1±5.1*	28.2±7.6	27.4±11.4	0.8±1.6
Connecticut	303	176	80.2±5.6	76.9±8.6	3.3±3.4	47.3±6.7	45.6±9.1	1.7±0.9*	22.8±5.4	20.0±6.4	2.8±0.7*
Delaware	268	144	69.1±7.0	68.0±10.3	1.1±1.6	40.9±6.9	39.1±9.6	1.8±2.3	22.8±5.9	17.4±6.6	5.4±1.8*
District of Columbia	319	187	72.5±6.9	73.7±8.8	-1.2±4.0	49.4±7.0	45.1±9.2	4.3±4.5	23.9±5.5	20.8±6.5	3.1±1.7*
Florida	248	148	72.5±7.5	71.8±9.0	0.7±0.9	40.8±8.0	40.9±9.5	-0.1±2.6	20.7±6.5	20.0±7.8	0.7±0.6*
Georgia	266	147	72.3±7.1	68.2±10.5	4.1±4.0*	38.5±7.4	31.8±10.1	6.7±5.2*	14.0±5.1	12.9±5.8	1.1±2.0
Hawaii	295	163	87.8±4.6	87.4±6.5	0.4±1.9	63.2±7.0	64.9±9.1	-1.7±3.1	38.9±6.6	42.2±9.1	-3.3±2.7*
Idaho	255	132	90.6±4.7	91.8±5.4	-1.2±0.3*	61.2±8.2	74.5±9.0	-13.3±7.6*	33.2±7.4	45.5±9.7	-12.3±6.3*
Illinois	578	332	75.0±5.0	75.2±7.3	-0.2±1.4	43.6±5.3	48.8±8.0	-5.2±7.6	18.7±4.1	21.0±6.9	-2.3±2.1*
Indiana	278	148	68.8±7.1	63.6±10.0	5.2±2.8*	34.2±6.8	37.7±8.9	-3.5±3.7	18.2±5.5	16.5±6.4	1.7±1.5*
Iowa	265	135	71.8±7.7	76.5±7.9	-4.7±3.4*	44.1±7.7	54.0±9.2	-9.9±7.8*	24.8±6.4	32.1±8.9	-7.3±6.8*
Kansas	254	149	79.4±6.2	72.9±10.3	6.5±2.3*	43.3±7.6	41.8±9.2	1.5±1.7	28.2±6.9	27.3±7.6	0.9±3.0
Kentucky	264	137	60.4±7.5	52.6±9.9	7.8±4.2*	33.2±6.9	32.5±8.8	0.7±3.3	13.5±4.5	18.9±7.2	-5.4±1.9*
Louisiana	325	203	58.0±7.4	60.6±10.3	-2.6±6.1	24.2±5.4	31.3±8.5	-7.1±7.3	8.9±2.9	14.9±6.0	-6.0±3.8*
Maine	256	124	75.8±6.9	75.4±9.7	0.4±1.8	49.1±7.4	48.9±10.2	0.2±4.7	30.9±6.7	27.9±8.6	3.0±3.9
Maryland	339	183	76.7±6.2	69.4±10.0	7.3±8.3	51.9±7.1	52.0±10.4	-0.1±0.1	26.9±6.2	24.2±8.1	2.7±3.2
Massachusetts	244	128	80.0±6.0	83.0±8.0	-3.0±4.0	60.1±7.3	62.4±9.9	-2.3±2.1*	32.7±6.9	28.9±8.7	3.8±2.7*
Michigan	277	158	76.1±7.1	74.6±9.5	1.5±6.3	44.2±7.6	44.0±9.6	0.2±3.2	19.6±5.8	21.7±8.1	-2.1±2.7
Minnesota	272	134	82.8±5.6	73.5±9.9	9.3±5.2*	57.5±7.0	49.1±9.8	8.4±3.9*	28.9±6.2	23.1±8.1	5.8±4.7*
Mississippi	275	159	50.6±8.5	50.5±9.3	0.1±4.4	19.7±6.3	19.7±6.1	0.0±3.2	10.1±5.0	9.1±4.1	1.0±2.5
Missouri	258	137	76.3±6.6	77.5±8.3	-1.2±1.4	36.9±7.6	39.3±10.9	-2.4±1.5*	16.4±5.5	21.6±9.8	-5.2±4.6*
Montana	277	151	90.3±3.8	82.4±7.2	7.9±2.6*	62.4±8.0	59.3±9.1	3.1±3.9	34.5±7.3	37.2±8.7	-2.7±1.9*
Nebraska	240	111	83.4±5.6	80.8±8.8	2.6±2.7	54.4±8.0	53.8±10.9	0.6±0.6	20.9±6.5	22.3±8.9	-1.4±0.8*
Nevada	295	169	78.0±6.6	79.1±8.3	-1.1±5.2	41.1±7.6	40.6±9.0	0.5±4.4	19.5±5.6	22.0±7.3	-2.5±6.1
New Hampshire	248	121	82.9±5.5	88.5±5.7	-5.6±4.3*	52.1±7.2	52.8±10.1	-0.7±2.7	30.5±6.4	24.7±8.0	5.8±4.3*
New Jersey	292	168	77.1±6.0	71.5±10.4	5.6±1.1*	47.4±6.9	47.8±10.3	-0.4±4.7	27.0±6.1	31.4±9.6	-4.4±3.6*
New Mexico	272	161	80.3±6.6	85.0±6.8	-4.7±7.9	40.8±7.2	46.7±9.4	-5.9±7.7	23.7±5.8	27.3±7.8	-3.6±7.4
New York	599	349	82.5±3.6	82.6±4.9	-0.1±1.2	53.9±4.6	52.6±6.0	1.3±1.4	28.7±4.1	28.4±5.4	0.3±1.7
North Carolina	261	140	72.1±7.7	74.9±8.9	-2.8±0.9*	48.1±8.0	48.5±10.1	-0.4±1.2	30.1±7.2	31.9±9.4	-1.8±1.0*
North Dakota	239	108	85.9±5.1	79.0±8.7	6.9±1.5*	47.1±7.8	44.6±10.1	2.5±1.7*	18.3±5.4	22.3±8.5	-4.0±1.9*
Ohio	251	128	60.3±8.2	65.4±9.7	-5.1±5.1	33.6±6.7	48.1±9.6	-14.5±9.9*	17.3±5.3	20.0±7.4	-2.7±1.4*
Oklahoma	270	138	70.9±7.6	74.2±8.4	-3.3±1.6*	35.7±7.1	39.0±9.0	-3.3±2.6*	17.3±5.7	13.7±5.9	3.6±0.9*
Oregon	254	123	91.2±3.9	90.2±6.1	1.0±2.8	65.1±7.3	71.0±9.4	-5.9±4.6*	39.8±7.1	52.3±10.2	-12.5±6.4*
Pennsylvania	587	269	72.5±5.4	70.2±9.0	2.3±2.6	45.7±5.8	42.9±8.8	2.8±2.7*	25.0±5.0	25.9±7.3	-0.9±1.5
Rhode Island	247	142	71.1±6.9	70.7±9.6	0.4±0.8	40.1±7.0	50.2±10.3	-10.1±6.7*	21.4±5.6	24.1±9.1	-2.7±0.2*
South Carolina	283	157	67.2±7.3	67.5±8.5	-0.3±2.7	34.6±7.3	32.0±8.2	2.6±1.8*	15.3±5.0	18.7±6.7	-3.4±1.0*
South Dakota	245	117	76.2±6.4	76.2±9.7	0.0±4.4	42.5±7.6	49.7±10.6	-7.2±4.9*	27.3±6.8	31.5±9.6	-4.2±4.2
Tennessee	279	155	65.5±7.5	59.6±9.7	5.9±2.7*	37.0±7.5	29.9±8.4	7.1±4.3*	21.1±6.3	16.8±6.9	4.3±2.3*
Texas	1612	776	77.2±3.7	77.2±6.7	0.0±1.0	42.8±4.4	45.5±7.0	-2.7±3.1	20.3±3.5	25.8±6.1	-5.5±4.7*
Utah	247	124	85.9±6.0	83.1±7.5	2.8±1.8*	62.3±7.9	64.2±9.7	-1.9±2.6	35.0±7.4	36.8±9.5	-1.8±1.8
Vermont	245	125	82.8±5.4	84.1±8.8	-1.3±5.1	61.7±7.0	62.3±11.6	-0.6±7.3	38.1±6.7	40.7±10.7	-2.6±6.7
Virginia	318	190	80.1±6.9	86.5±6.6	-6.4±9.2	54.2±7.9	54.6±9.3	-0.4±3.8	32.9±7.4	33.0±8.6	-0.1±1.2
Washington	239	123	91.2±4.8	87.9±7.5	3.3±5.1	61.5±7.5	60.2±10.0	1.3±4.4	34.0±7.2	30.2±9.1	3.8±2.6*
West Virginia	228	111	59.3±8.0	60.5±10.8	-1.2±3.4	27.7±6.7	32.8±10.1	-5.1±1.4*	15.6±5.3	21.3±8.9	-5.7±2.5*
Wisconsin	236	121	74.0±7.9	75.5±9.7	-1.5±2.1	46.6±7.8	54.9±11.0	-8.3±2.5*	20.0±5.4	33.6±10.6	-13.6±5.1*
Wyoming	232	114	85.5±5.6	86.5±6.8	-1.0±1.9	47.6±7.6	55.6±10.3	-8.0±5.9*	24.1±6.0	30.6±9.4	-6.5±4.2*

 

*difference is statistically significant

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Table 4. Breastfeeding Exclusivity and Formula Supplementation Rates Among Infants Born in 2010 Estimated with Landline and Dual-Frame Sampling - National Immunization Surveys 2011 and 2012

	Exclusive Breastfeeding at 3 Months					Exclusive Breastfeeding at 6 Months					Formula Supplementation before 2 Days
State	Dual-frame		Landline		Difference	Dual-frame	Landline	Difference	Dual-frame		Landline		Difference
	n	Percentage ± half 95% CI	n	Percentage ± half 95% CI	Percentage points ± half 95% CI	n	Percentage ± half 95% CI	n	Percentage ± half 95% CI	Percentage points ± half 95% CI	n	Percentage ± half 95% CI	n	Percentage ± half 95% CI	Percentage points ± half 95% CI
Alabama	248	23.6±6.6	124	23.5±8.0	0.1±2.9	248	13.1±5.5	124	11.9±6.2	1.2±1.8	163	19.3±7.2	81	21.0±10.1	-1.7±0.7*
Alaska	277	46.5±6.7	148	48.1±8.8	-1.6±1.6	277	24.2±5.6	148	26.4±7.6	-2.2±1.9*	240	15.0±5.0	131	19.4±7.6	-4.4±4.4
Arizona	252	44.3±7.9	124	39.4±11.5	4.9±6.3	252	22.9±6.9	124	15.0±9.8	7.9±7.7*	216	22.4±6.9	107	33.3±12.2	-10.9±5.6*
Arkansas	256	23.0±6.3	123	22.5±8.9	0.5±1.8	256	8.8±3.9	123	9.2±6.1	-0.4±0.2*	177	25.2±8.6	82	20.0±12.4	5.2±1.8*
California	272	52.3±8.3	152	56.8±10.2	-4.5±2.9*	272	29.4±7.6	152	27.4±9.6	2.0±2.7	252	17.8±6.7	141	16.9±7.3	0.9±1.0
Colorado	254	44.5±8.9	138	43.6±12.9	0.9±0.8*	254	21.2±7.2	138	24.1±12.5	-2.9±1.8*	212	19.1±8.2	116	27.0±13.1	-7.9±8.9
Connecticut	297	33.7±6.2	172	35.8±8.6	-2.1±3.3	297	16.1±4.8	172	15.5±6.0	0.6±0.8	247	26.1±7.0	140	24.1±9.3	2.0±1.1*
Delaware	266	29.0±6.2	142	30.6±9.0	-1.6±2.8	266	12.5±4.0	142	17.4±7.5	-4.9±4.1*	200	29.0±7.9	107	19.6±8.9	9.4±6.1*
District of Columbia	315	34.7±6.5	185	32.1±8.2	2.6±2.3*	315	16.0±4.9	185	14.6±5.9	1.4±1.2*	252	27.9±7.2	149	31.3±10.5	-3.4±1.3*
Florida	241	32.8±7.7	143	29.2±8.8	3.6±2.2*	241	15.6±6.2	143	10.6±6.3	5.0±3.9*	187	25.0±7.8	111	34.1±10.7	-9.1±8.0*
Georgia	262	22.5±5.9	143	22.2±7.7	0.3±2.8	262	6.9±3.2	143	6.2±4.0	0.7±2.9	202	27.0±8.8	110	26.6±12.6	0.4±2.1
Hawaii	290	49.1±7.0	160	51.4±9.2	-2.3±1.4*	290	22.4±5.5	160	21.9±7.9	0.5±1.3	259	18.2±5.4	143	16.2±6.8	2.0±2.2
Idaho	252	44.6±7.6	130	59.7±9.8	-15.1±7.3*	252	20.1±5.8	130	26.7±8.5	-6.6±0.9*	232	18.5±6.5	121	15.0±7.5	3.5±2.5*
Illinois	572	32.3±5.0	330	34.6±7.3	-2.3±0.8*	572	11.6±3.0	330	11.1±4.4	0.5±0.0*	452	27.5±5.8	263	27.8±9.0	-0.3±2.2
Indiana	274	30.0±6.8	147	27.6±8.0	2.4±4.3	274	11.7±4.2	147	13.8±5.6	-2.1±1.3*	205	20.5±7.1	109	22.5±9.7	-2.0±3.3
Iowa	261	37.9±7.5	132	42.7±9.3	-4.8±8.4	261	16.2±5.3	132	18.6±7.1	-2.4±2.3*	200	15.9±6.1	104	20.4±8.7	-4.5±1.1*
Kansas	251	37.2±7.5	148	30.2±7.9	7.0±0.5*	251	14.1±4.8	148	15.0±5.7	-0.9±1.1	209	21.4±6.9	126	28.5±9.0	-7.1±3.8*
Kentucky	259	34.2±7.0	136	33.2±8.9	1.0±4.2	259	14.8±5.0	136	14.4±6.5	0.4±2.6	159	11.5±6.5	77	8.6±6.7	2.9±6.0
Louisiana	320	25.8±5.7	200	30.6±8.6	-4.8±7.2	320	9.2±3.6	200	10.7±5.3	-1.5±1.2*	214	14.5±6.1	136	13.0±7.6	1.5±3.8
Maine	252	45.2±7.3	122	46.2±10.1	-1.0±4.3	252	21.2±5.9	122	22.9±8.0	-1.7±5.4	201	11.1±4.7	97	12.7±7.1	-1.6±2.3
Maryland	332	34.0±6.7	181	29.3±8.6	4.7±2.7*	332	17.5±5.4	181	15.1±7.0	2.4±2.3*	276	25.8±7.2	141	22.9±10.0	2.9±2.4*
Massachusetts	243	45.0±7.2	128	55.4±9.8	-10.4±8.9*	243	19.2±5.6	128	20.5±7.7	-1.3±0.6*	198	22.0±7.1	109	15.0±7.6	7.0±6.0*
Michigan	274	35.7±7.2	156	34.3±9.2	1.4±6.0	274	17.7±5.8	156	13.0±5.3	4.7±4.9	218	19.2±7.2	122	21.0±8.5	-1.8±4.7
Minnesota	268	50.6±7.1	131	47.0±9.9	3.6±1.5*	268	23.7±6.0	131	23.4±8.8	0.3±0.6	231	16.8±5.9	106	15.2±8.4	1.6±2.5
Mississippi	273	19.2±6.5	158	16.9±5.8	2.3±2.5	273	6.4±4.1	158	5.1±3.1	1.3±1.8	152	22.3±8.8	88	21.2±9.2	1.1±1.1
Missouri	252	32.0±7.1	133	39.0±11.1	-7.0±3.5*	252	13.6±5.4	133	15.4±9.7	-1.8±1.2*	192	19.7±7.2	99	21.6±11.4	-1.9±1.7*
Montana	270	53.8±7.8	150	50.2±9.1	3.6±4.7	270	21.6±6.5	150	20.1±7.1	1.5±2.4	241	13.3±6.0	129	13.5±7.3	-0.2±3.4
Nebraska	236	45.1±7.9	108	48.3±11.0	-3.2±2.7*	236	15.9±5.2	108	21.3±9.2	-5.4±3.0*	202	19.1±7.4	89	19.1±9.4	0.0±5.3
Nevada	294	33.9±7.6	168	33.9±8.7	0.0±6.5	294	18.7±7.1	168	18.6±7.1	0.1±4.0	242	24.2±6.8	143	34.6±10.3	-10.4±4.3*
New Hampshire	244	46.4±7.1	119	49.5±10.1	-3.1±2.1*	244	22.8±5.7	119	24.9±8.9	-2.1±0.8*	207	14.6±5.6	105	16.3±8.7	-1.7±0.9*
New Jersey	286	34.2±6.7	160	31.9±10.0	2.3±1.5*	286	13.0±4.5	160	10.8±6.3	2.2±1.7*	229	30.9±7.3	129	35.4±10.6	-4.5±2.6*
New Mexico	266	34.3±7.2	156	30.3±8.5	4.0±1.2*	266	17.4±5.3	156	19.3±7.2	-1.9±4.3	228	21.1±7.0	140	25.1±9.7	-4.0±1.2*
New York	589	33.8±4.3	345	32.0±5.5	1.8±1.5*	589	16.3±3.3	345	16.5±4.3	-0.2±1.2	502	34.0±5.0	298	34.7±6.3	-0.7±1.4
North Carolina	261	37.6±7.6	141	32.6±8.9	5.0±3.4*	261	19.1±6.5	141	14.8±7.0	4.3±2.3*	205	20.4±7.8	110	22.5±10.5	-2.1±0.5*
North Dakota	238	45.9±7.8	107	43.6±10.2	2.3±3.1	238	15.6±5.3	107	20.5±8.4	-4.9±1.3*	200	14.0±6.6	87	10.0±6.1	4.0±2.2*
Ohio	249	35.0±7.1	126	40.2±9.3	-5.2±4.9*	249	13.0±4.8	126	17.7±7.3	-4.7±2.2*	180	17.8±6.9	93	16.6±8.5	1.2±2.9
Oklahoma	267	34.4±7.1	135	37.9±9.0	-3.5±3.3*	267	17.7±5.7	135	16.6±6.3	1.1±0.7*	206	12.8±5.5	103	10.2±6.5	2.6±2.9
Oregon	252	55.5±7.3	121	53.2±10.2	2.3±5.4	252	28.4±6.7	121	23.9±8.6	4.5±6.2	233	16.4±5.9	112	22.0±9.7	-5.6±3.7*
Pennsylvania	584	33.5±5.4	269	31.9±8.2	1.6±3.2	584	17.4±4.5	269	16.5±6.7	0.9±2.3	421	18.9±4.9	184	19.8±7.3	-0.9±1.3
Rhode Island	243	31.7±6.5	139	41.6±10.3	-9.9±6.3*	243	12.1±4.7	139	16.7±8.0	-4.6±1.6*	180	26.5±7.6	103	19.8±9.4	6.7±2.9*
South Carolina	281	31.3±7.1	156	32.7±8.3	-1.4±0.4*	281	14.8±5.8	156	16.0±6.6	-1.2±0.9*	201	14.3±5.7	113	16.1±8.0	-1.8±1.7*
South Dakota	239	39.7±7.2	113	51.3±10.8	-11.6±3.4*	239	19.1±5.4	113	26.0±9.3	-6.9±2.3*	191	13.3±7.1	92	10.9±7.8	2.4±4.6
Tennessee	275	23.9±6.4	154	17.9±6.6	6.0±6.3	275	8.3±4.4	154	4.1±3.4	4.2±3.8*	194	18.0±6.9	104	27.0±10.7	-9.0±9.1
Texas	1591	33.6±4.0	766	35.7±6.6	-2.1±1.1*	1591	14.7±3.1	766	14.4±4.7	0.3±0.3	1298	30.9±5.1	630	31.7±8.0	-0.8±4.3
Utah	241	41.9±7.8	120	43.0±9.9	-1.1±1.9	241	16.0±5.5	120	22.5±8.2	-6.5±7.1	216	23.2±7.3	103	22.9±9.5	0.3±1.6
Vermont	242	53.2±7.2	125	51.7±11.3	1.5±5.2	242	28.2±6.3	125	25.9±9.0	2.3±1.6*	207	10.5±4.5	108	13.8±8.9	-3.3±1.1*
Virginia	317	36.2±7.5	190	39.5±8.8	-3.3±5.1	317	16.6±5.5	190	15.1±6.1	1.5±2.4	279	32.7±8.0	168	32.4±9.7	0.3±1.8
Washington	237	52.2±7.7	122	47.6±10.1	4.6±5.1	237	21.0±6.0	122	19.6±7.7	1.4±1.5	220	19.9±6.7	110	21.4±9.5	-1.5±0.7*
West Virginia	227	27.0±6.8	110	27.2±8.8	-0.2±2.0	227	10.8±4.5	110	9.1±5.1	1.7±2.1	149	16.8±7.8	71	23.6±13.1	-6.8±3.3*
Wisconsin	232	38.7±7.6	119	40.5±10.7	-1.8±2.0	232	16.7±5.4	119	15.3±6.6	1.4±2.6	188	18.3±6.8	94	23.3±12.0	-5.0±0.9*
Wyoming	229	45.5±7.6	113	51.1±10.5	-5.6±4.4*	229	17.5±5.4	113	24.9±9.2	-7.4±5.0*	200	14.7±6.1	97	11.9±7.6	2.8±2.4*

 

*difference is statistically significant

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Table 5. Breastfeeding Rates Among Infants Born in 2009 Estimated with Landline and Dual-Frame Sampling - National Immunization Surveys 2011 and 2012

			Ever Breastfed			Breastfed at 6 Months			Breastfed at 12 Months
State	Dual-frame	Landline	Dual-frame	Landline	Difference	Dual-frame	Landline	Difference	Dual-frame	Landline	Difference
	n	n	Percentage ± half 95% CI	Percentage ± half 95% CI	Percentage points ± half 95% CI	Percentage ± half 95% CI	Percentage ± half 95% CI	Percentage points ± half 95% CI	Percentage ± half 95% CI	Percentage ± half 95% CI	Percentage points ± half 95% CI
Alabama	451	340	57.5±6.1	59.7±7.4	-2.2±2.8	31.4±5.3	30.1±6.3	1.3±3.2	14.1±3.7	15.1±4.9	-1.0±1.4
Alaska	382	275	84.5±4.7	84.2±5.3	0.3±1.5	56.6±6.2	58.6±6.4	-2.0±2.7	30.3±5.4	33.1±5.9	-2.8±4.1
Arizona	393	287	72.1±6.5	77.9±6.5	-5.8±4.6*	40.6±6.6	42.3±7.4	-1.7±4.6	22.3±5.3	24.3±6.2	-2.0±4.2
Arkansas	380	287	66.0±6.4	63.4±6.9	2.6±2.5*	28.4±5.8	29.6±6.4	-1.2±2.4	12.3±4.0	16.0±5.3	-3.7±1.1*
California	523	337	86.9±3.7	86.8±4.3	0.1±0.9	60.7±5.5	59.8±7.0	0.9±4.7	33.1±5.1	34.8±6.7	-1.7±3.7
Colorado	429	337	86.0±5.6	85.0±7.8	1.0±2.4	51.1±7.9	53.8±9.3	-2.7±5.9	28.0±7.2	26.9±8.4	1.1±2.8
Connecticut	451	351	82.6±4.5	81.7±5.5	0.9±0.6*	54.3±5.8	50.4±6.9	3.9±2.9*	24.9±4.5	24.0±5.3	0.9±0.8*
Delaware	401	305	69.8±5.8	70.3±7.1	-0.5±2.3	39.2±5.6	43.7±7.2	-4.5±2.9*	21.0±4.5	24.2±6.1	-3.2±1.8*
District of Columbia	464	358	70.7±6.2	73.0±6.4	-2.3±2.6	43.8±5.8	47.7±6.9	-3.9±5.4	24.5±4.6	26.4±5.9	-1.9±3.0
Florida	428	287	76.5±5.5	76.2±6.7	0.3±4.4	44.6±6.2	48.2±7.4	-3.6±4.0	28.3±5.7	26.7±6.4	1.6±1.2*
Georgia	428	317	66.1±6.5	67.2±7.8	-1.1±4.8	35.9±6.0	37.9±7.4	-2.0±4.2	15.3±4.3	13.8±4.1	1.5±2.5
Hawaii	354	257	84.9±7.0	85.3±6.4	-0.4±0.7	52.1±7.3	55.3±7.7	-3.2±1.7*	33.8±6.3	35.7±7.2	-1.9±3.6
Idaho	333	228	90.7±4.7	87.5±5.6	3.2±3.4	57.2±7.6	58.0±7.5	-0.8±2.6	33.4±6.6	35.4±7.0	-2.0±0.8*
Illinois	885	644	73.6±4.5	76.3±5.5	-2.7±2.0*	45.7±4.7	47.5±6.0	-1.8±2.4	21.7±3.7	21.4±4.2	0.3±1.2
Indiana	420	319	71.7±5.8	72.4±6.5	-0.7±0.9	36.1±6.0	38.1±6.6	-2.0±1.0*	17.8±4.5	20.0±5.5	-2.2±2.4
Iowa	343	254	79.4±5.4	78.9±5.9	0.5±1.9	48.8±6.5	53.2±6.9	-4.4±1.3*	26.2±5.7	28.0±6.4	-1.8±1.3*
Kansas	433	316	76.8±7.0	76.7±7.3	0.1±2.6	44.1±6.8	45.4±7.5	-1.3±4.4	23.0±5.1	24.1±6.0	-1.1±3.5
Kentucky	371	268	59.9±6.8	57.3±7.0	2.6±5.7	31.4±5.9	31.9±6.4	-0.5±3.3	16.0±4.6	17.6±5.4	-1.6±2.0
Louisiana	423	324	53.9±6.4	52.3±6.9	1.6±1.6	27.0±5.2	25.7±5.6	1.3±5.1	12.6±4.0	10.2±3.5	2.4±2.1*
Maine	335	238	74.0±5.9	69.8±7.9	4.2±5.8	41.7±6.3	41.2±7.5	0.5±2.9	23.2±4.8	23.2±5.9	0.0±1.8
Maryland	721	536	75.3±4.9	75.0±6.0	0.3±1.5	49.5±5.5	48.6±6.8	0.9±2.2	27.0±5.1	24.6±6.1	2.4±3.8
Massachusetts	376	263	82.0±5.2	85.2±5.2	-3.2±2.0*	55.5±6.4	58.5±7.5	-3.0±1.1*	31.4±5.7	33.7±7.0	-2.3±0.8*
Michigan	462	358	75.0±5.9	77.8±6.1	-2.8±4.0	42.0±6.1	44.9±6.9	-2.9±0.9*	20.0±4.5	22.3±5.9	-2.3±1.0*
Minnesota	352	240	81.9±5.6	79.6±6.8	2.3±4.7	59.1±6.6	56.4±7.6	2.7±5.9	29.9±6.3	31.7±7.4	-1.8±0.6*
Mississippi	391	283	51.1±7.0	48.6±7.3	2.5±4.2	26.2±6.2	25.4±5.7	0.8±6.5	12.1±4.8	12.0±4.3	0.1±3.9
Missouri	436	333	76.0±5.5	76.7±6.4	-0.7±4.6	38.2±5.8	43.2±7.4	-5.0±3.2*	19.9±4.6	24.6±6.7	-4.7±2.5*
Montana	393	284	85.1±5.6	83.0±5.5	2.1±2.3	57.8±7.0	52.8±6.7	5.0±7.7	25.9±5.8	30.1±6.0	-4.2±3.2*
Nebraska	319	228	77.0±7.0	84.7±5.9	-7.7±7.0*	47.0±7.1	54.9±7.8	-7.9±5.3*	23.5±5.3	29.7±7.0	-6.2±3.6*
Nevada	362	260	80.2±5.7	77.3±6.3	2.9±5.1	37.5±7.0	36.3±7.1	1.2±5.6	20.3±5.5	19.4±5.5	0.9±0.9
New Hampshire	316	217	81.9±6.1	82.6±6.6	-0.7±5.0	56.0±6.8	60.2±7.8	-4.2±5.6	30.6±5.9	34.7±7.2	-4.1±3.7*
New Jersey	469	362	80.5±4.5	79.5±5.7	1.0±1.7	48.3±5.6	51.1±7.1	-2.8±3.2	24.7±4.7	27.5±6.8	-2.8±1.1*
New Mexico	381	270	75.0±6.2	80.2±6.0	-5.2±3.4*	49.7±6.7	51.9±7.7	-2.2±2.2	28.0±5.8	30.4±6.5	-2.4±2.1*
New York	819	608	79.6±3.4	79.0±3.8	0.6±1.7	51.1±4.1	51.9±4.6	-0.8±3.0	28.2±3.7	29.1±4.1	-0.9±2.2
North Carolina	352	246	69.1±6.6	70.3±7.4	-1.2±0.9*	40.3±6.7	39.2±7.6	1.1±3.2	20.4±5.1	21.2±5.8	-0.8±2.9
North Dakota	312	208	75.7±6.7	81.0±5.4	-5.3±2.7*	48.1±7.6	50.2±7.7	-2.1±3.5	23.1±6.3	26.0±6.9	-2.9±3.7
Ohio	348	246	66.4±6.5	65.3±7.3	1.1±1.5	42.4±6.5	38.3±6.9	4.1±0.5*	25.2±5.8	23.7±6.0	1.5±3.2
Oklahoma	380	282	70.1±6.0	70.7±6.2	-0.6±2.5	30.3±5.4	33.1±6.4	-2.8±1.0*	12.8±3.7	14.3±4.6	-1.5±1.5
Oregon	373	282	85.2±8.0	89.7±4.9	-4.5±8.1	62.7±8.2	70.8±6.8	-8.1±8.3	41.4±7.3	45.2±7.1	-3.8±4.2
Pennsylvania	845	563	70.0±4.8	71.4±5.4	-1.4±2.7	43.0±4.8	47.1±6.1	-4.1±1.4*	21.7±3.9	25.6±5.7	-3.9±1.3*
Rhode Island	425	312	70.6±5.9	69.8±7.4	0.8±1.1	43.3±5.9	45.0±7.6	-1.7±3.0	24.7±4.9	26.4±6.4	-1.7±1.8
South Carolina	364	261	61.3±6.6	63.5±7.0	-2.2±3.3	35.2±6.2	35.8±6.5	-0.6±2.4	15.0±4.0	18.9±5.1	-3.9±1.5*
South Dakota	330	226	72.6±7.7	71.9±7.5	0.7±1.2	49.3±8.3	49.1±7.8	0.2±6.0	25.8±7.4	26.6±6.6	-0.8±5.1
Tennessee	378	269	64.4±6.7	63.6±7.5	0.8±3.4	34.0±6.2	29.6±6.3	4.4±1.7*	17.1±4.7	15.2±5.0	1.9±2.6
Texas	2271	1541	77.2±3.2	78.0±4.1	-0.8±1.7	44.8±3.9	49.4±5.1	-4.6±2.9*	22.3±3.1	25.5±4.6	-3.2±2.3*
Utah	361	262	88.4±4.6	88.4±4.3	0.0±2.6	64.9±6.7	67.3±6.7	-2.4±1.0*	34.9±6.3	37.0±6.7	-2.1±1.5*
Vermont	351	238	85.2±4.8	85.3±5.3	-0.1±1.7	64.3±6.1	63.2±7.9	1.1±0.9*	38.4±5.8	40.2±7.6	-1.8±2.5
Virginia	487	354	79.8±5.7	80.5±6.3	-0.7±2.1	52.9±6.5	53.3±7.5	-0.4±2.9	29.6±5.5	29.6±6.5	0.0±5.4
Washington	370	264	87.0±5.7	87.9±4.7	-0.9±2.9	55.7±6.7	55.2±7.0	0.5±3.6	33.9±5.9	33.6±6.3	0.3±1.2
West Virginia	416	314	58.0±6.1	55.3±7.1	2.7±3.3	26.4±5.0	24.3±5.4	2.1±1.9*	14.0±3.9	12.2±3.9	1.8±0.2*
Wisconsin	376	269	80.1±5.6	82.1±5.7	-2.0±1.0*	45.9±6.8	51.0±7.3	-5.1±4.5*	17.0±4.4	21.0±5.6	-4.0±3.6*
Wyoming	379	260	83.7±5.8	83.4±6.0	0.3±1.5	55.0±6.8	58.6±7.3	-3.6±5.6	28.1±5.7	26.4±6.6	1.7±4.7

 

*difference is statistically significant

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Table 6. Breastfeeding Exclusivity and Formula Supplementation Rates Among Infants Born in 2009 Estimated with Landline and Dual-Frame Sampling - National Immunization Surveys 2011 and 2012

	Exclusive Breastfeeding at 3 Months					Exclusive Breastfeeding at 6 Months					Formula Supplementation before 2 Days
State	Dual-frame		Landline		Difference	Dual-frame		Landline		Difference	Dual-frame		Landline		Difference
	n	Percentage ± half 95% CI	n	Percentage ± half 95% CI	Percentage points ± half 95% CI	n	Percentage ± half 95% CI	n	Percentage ±half 95% CI	Percentage points ± half 95% CI	n	Percentage ±half 95% CI	n	Percentage ± half 95% CI	Percentage points ± half 95% CI
Alabama	449	25.2±5.0	336	27.0±6.2	-1.8±3.0	449	9.9±3.5	336	10.4±4.5	-0.5±3.1	288	19.6±5.4	216	16.0±4.9	3.6±3.5*
Alaska	377	47.8±6.2	272	47.3±6.5	0.5±3.7	377	20.3±4.9	272	19.2±4.9	1.1±1.6	328	12.5±4.6	239	15.3±4.9	-2.8±4.2
Arizona	384	35.3±6.5	278	36.1±7.3	-0.8±2.8	384	16.0±4.8	278	17.6±5.9	-1.6±3.9	311	23.1±6.1	231	25.1±7.1	-2.0±2.8
Arkansas	375	25.2±5.7	283	21.4±5.3	3.8±2.4*	375	10.9±4.1	283	9.0±3.6	1.9±2.0	262	19.9±6.7	193	16.7±6.9	3.2±3.5
California	513	44.7±5.6	333	42.2±6.9	2.5±4.2	513	21.2±4.7	333	21.8±6.0	-0.6±2.9	453	20.5±4.6	291	22.6±6.0	-2.1±1.7*
Colorado	424	44.8±8.0	333	45.0±9.2	-0.2±4.4	424	21.9±7.1	333	22.8±7.7	-0.9±9.0	384	20.9±6.7	302	24.7±9.0	-3.8±3.3*
Connecticut	443	43.0±5.6	344	41.3±6.8	1.7±2.9	443	15.6±3.8	344	14.3±4.6	1.3±1.8	379	21.1±5.0	290	22.8±6.4	-1.7±3.9
Delaware	392	31.5±5.3	298	34.5±7.0	-3.0±1.9*	392	11.2±3.3	298	11.3±4.3	-0.1±1.3	299	22.1±6.1	233	20.3±6.5	1.8±0.4*
District of Columbia	458	30.4±5.0	352	33.4±6.3	-3.0±6.1	458	13.7±3.4	352	14.6±3.8	-0.9±3.0	378	29.1±6.6	296	28.1±7.7	1.0±5.5
Florida	422	31.4±5.5	283	31.2±6.3	0.2±1.0	422	15.9±4.3	283	16.5±5.3	-0.6±1.7	344	32.2±6.7	233	33.3±8.1	-1.1±2.8
Georgia	424	25.0±5.3	315	26.1±6.0	-1.1±2.8	424	11.7±3.8	315	12.1±4.4	-0.4±1.7	309	29.4±6.8	232	32.2±8.2	-2.8±3.3
Hawaii	350	41.8±6.9	254	46.5±7.7	-4.7±1.2*	350	22.9±5.5	254	27.4±6.9	-4.5±3.3*	318	29.1±7.1	230	25.0±6.9	4.1±1.4*
Idaho	323	47.0±7.5	222	48.6±7.5	-1.6±4.3	323	25.4±6.6	222	22.1±6.0	3.3±5.3	300	16.4±5.8	203	16.8±6.0	-0.4±4.7
Illinois	877	34.0±4.5	642	36.8±5.9	-2.8±2.6*	877	14.2±3.1	642	14.2±3.7	0.0±1.7	705	28.6±5.0	523	28.3±6.3	0.3±3.3
Indiana	413	28.4±5.7	314	31.0±6.5	-2.6±1.3*	413	12.7±4.0	314	15.7±5.2	-3.0±0.4*	303	21.9±7.6	236	16.9±6.1	5.0±4.7*
Iowa	339	41.5±6.4	251	42.6±6.9	-1.1±1.6	339	17.3±5.0	251	15.1±4.7	2.2±2.1*	272	21.4±6.1	204	19.2±6.2	2.2±0.4*
Kansas	429	33.1±6.1	313	37.7±7.0	-4.6±2.8*	429	16.2±4.5	313	19.4±5.7	-3.2±3.5	357	25.9±7.0	263	18.9±6.6	7.0±1.6*
Kentucky	367	25.0±5.5	267	25.1±6.2	-0.1±2.7	367	10.8±4.1	267	12.5±5.4	-1.7±2.4	237	19.4±6.1	167	19.3±6.7	0.1±3.1
Louisiana	416	22.3±4.8	317	17.6±4.2	4.7±5.9	416	9.7±3.3	317	8.8±3.0	0.9±2.9	262	21.5±6.7	204	20.5±7.3	1.0±5.4
Maine	329	38.2±6.1	233	39.7±7.4	-1.5±3.9	329	15.3±4.1	233	15.6±5.1	-0.3±1.0	262	13.6±5.8	182	12.6±5.8	1.0±0.7*
Maryland	719	31.9±5.1	537	33.8±6.5	-1.9±3.0	719	16.0±4.5	537	13.6±4.8	2.4±2.8	578	26.2±5.3	432	26.2±6.8	0.0±3.0
Massachusetts	374	40.7±6.0	260	43.0±7.4	-2.3±2.7	374	16.8±4.3	260	18.1±6.0	-1.3±1.9	316	22.4±6.2	221	22.2±7.0	0.2±1.2
Michigan	455	34.4±6.1	351	34.0±6.4	0.4±1.0	455	15.4±4.5	351	15.0±4.8	0.4±1.4	366	21.0±5.6	288	18.8±5.6	2.2±2.3
Minnesota	345	42.2±6.8	234	39.2±7.5	3.0±5.7	345	21.5±6.1	234	18.5±5.9	3.0±7.5	298	14.6±5.1	199	14.8±6.4	-0.2±2.3
Mississippi	385	19.3±5.2	278	21.8±5.7	-2.5±0.9*	385	6.4±2.8	278	8.9±3.6	-2.5±1.7*	223	26.6±8.6	153	26.0±9.0	0.6±3.4
Missouri	431	34.3±5.7	329	37.1±7.1	-2.8±1.4*	431	15.2±4.3	329	17.8±6.1	-2.6±0.6*	342	16.4±5.2	264	13.2±5.0	3.2±1.1*
Montana	390	50.9±7.1	282	42.0±6.7	8.9±9.4	390	23.6±6.4	282	15.9±4.8	7.7±3.9*	340	12.3±5.2	244	10.7±4.4	1.6±4.8
Nebraska	312	43.2±7.2	222	48.6±7.8	-5.4±3.2*	312	18.6±5.4	222	20.3±6.6	-1.7±3.1	265	18.4±6.2	197	15.8±6.1	2.6±3.0
Nevada	355	40.2±7.8	255	34.4±7.0	5.8±8.1	355	11.2±4.5	255	9.8±4.1	1.4±2.1	291	22.7±6.1	204	29.8±7.9	-7.1±5.8*
New Hampshire	313	49.1±6.7	216	45.0±7.5	4.1±2.0*	313	21.4±5.4	216	21.9±5.7	-0.5±3.7	269	12.4±4.3	187	11.7±5.6	0.7±1.9
New Jersey	461	37.0±5.4	357	35.0±6.8	2.0±3.4	461	14.0±3.6	357	12.6±3.7	1.4±1.4	384	27.1±5.4	292	32.9±7.6	-5.8±5.8
New Mexico	373	38.7±6.4	263	36.8±6.9	1.9±3.9	373	21.8±5.6	263	18.0±5.1	3.8±2.3*	303	20.2±5.7	222	27.2±8.1	-7.0±4.8*
New York	807	34.1±4.0	598	32.3±4.2	1.8±0.9*	807	15.3±3.2	598	15.1±3.2	0.2±1.4	668	28.2±3.9	491	29.4±4.8	-1.2±2.1
North Carolina	342	34.2±6.6	243	34.6±7.4	-0.4±5.9	342	13.9±4.6	243	15.3±5.7	-1.4±0.9*	265	20.2±6.7	184	19.3±7.4	0.9±6.0
North Dakota	308	37.5±7.3	206	37.0±7.5	0.5±4.3	308	15.6±5.2	206	17.8±6.1	-2.2±1.4*	243	20.2±8.2	165	12.1±5.0	8.1±5.2*
Ohio	343	38.7±6.5	243	31.2±6.4	7.5±3.0*	343	14.4±4.6	243	12.3±4.2	2.1±1.9*	251	15.9±5.6	176	14.6±5.8	1.3±2.7
Oklahoma	378	27.6±5.4	280	27.2±5.9	0.4±2.5	378	9.1±3.1	280	8.7±3.3	0.4±1.0	283	25.7±6.1	207	27.1±7.5	-1.4±1.7
Oregon	368	52.0±7.9	278	57.6±7.4	-5.6±5.9	368	24.4±5.5	278	28.4±6.4	-4.0±7.2	340	18.4±6.2	260	19.3±7.0	-0.9±0.4*
Pennsylvania	832	37.0±4.7	551	40.7±6.0	-3.7±0.9*	832	13.1±3.1	551	14.0±4.0	-0.9±1.0	605	15.3±3.8	390	12.8±4.2	2.5±2.5
Rhode Island	421	31.1±5.2	310	32.2±7.0	-1.1±2.5	421	13.3±3.8	310	15.7±5.8	-2.4±2.1*	326	21.3±6.3	237	24.3±7.9	-3.0±2.3*
South Carolina	363	28.9±5.8	261	26.9±5.7	2.0±3.0	363	12.0±4.0	261	11.6±4.1	0.4±1.4	246	24.1±7.2	184	28.6±8.2	-4.5±8.8
South Dakota	328	38.1±8.1	224	36.7±7.4	1.4±1.8	328	18.9±6.3	224	19.1±5.9	-0.2±1.8	251	23.3±8.0	173	21.9±7.1	1.4±4.9
Tennessee	376	32.8±6.2	267	28.1±6.3	4.7±2.2*	376	12.8±4.4	267	9.3±3.8	3.5±3.1*	263	19.8±6.9	187	17.6±6.9	2.2±2.4
Texas	2234	32.8±3.5	1517	35.2±4.8	-2.4±3.1	2234	12.7±2.4	1517	14.7±3.6	-2.0±0.9*	1805	28.6±4.1	1227	27.8±5.3	0.8±1.2
Utah	353	44.4±6.7	254	48.7±7.2	-4.3±2.3*	353	19.2±5.1	254	21.8±5.6	-2.6±3.4	321	22.6±6.2	227	21.9±6.7	0.7±7.1
Vermont	347	50.8±6.2	236	49.8±7.9	1.0±4.0	347	24.3±4.9	236	25.9±6.8	-1.6±3.2	303	13.8±4.9	203	16.8±7.6	-3.0±2.5*
Virginia	482	36.2±5.9	350	37.5±7.0	-1.3±1.1*	482	17.2±4.3	350	18.0±5.2	-0.8±2.4	422	28.0±6.8	302	27.3±7.8	0.7±1.6
Washington	361	47.9±6.6	261	46.6±6.9	1.3±5.4	361	19.7±4.5	261	19.2±5.1	0.5±5.4	328	18.4±5.2	233	21.2±6.2	-2.8±4.2
West Virginia	414	25.7±5.2	313	21.8±5.4	3.9±3.2*	414	10.6±3.5	313	9.6±4.1	1.0±3.4	260	16.6±5.9	189	15.5±5.5	1.1±1.4
Wisconsin	371	33.7±6.4	265	31.0±6.8	2.7±5.6	371	15.2±4.0	265	15.7±4.9	-0.5±2.1	311	25.0±7.3	225	20.3±6.3	4.7±5.6
Wyoming	371	47.0±6.7	254	49.3±7.6	-2.3±4.0	371	21.6±5.5	254	19.4±6.0	2.2±2.1*	318	14.0±5.1	216	12.0±4.6	2.0±1.7*

 

*difference is statistically significant

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