Table 6.

Multivariate linear regression for sociodemographic and obstetric data according to the volume of breast milk production.

Origin	Dependent variable	Sum of squares type III	DF	Mean square	F	Significance
Adjusted model	Day 0	3,893.556a	21	185.407	1.249	.287
	Day 1	9,241.576b	21	440.075	1.645	.108
	Day 2	19,840.478c	21	944.785	1.642	.109
	Day 3	23,939.644d	21	1,139.983	1.356	.223
	Day 4	60,968.653e	21	2,903.269	1.557	.136
	Day 5	1,60,460.019f	21	7,640.953	1.618	.116
	Day 6	2,92,044.657g	21	13,906.888	1.467	.170
	Day 7	4,12,037.737h	21	19,620.845	1.618	.116
Stimulation vs. mother's age	Day 0	161.124	3	53.708	.362	.781
	Day 1	3,384.022	3	1,128.007	4.217	.014
	Day 2	6,889.859	3	2,296.620	3.993	.017
	Day 3	3,506.734	3	1,168.911	1.390	.266
	Day 4	14,240.719	3	4,746.906	2.546	.076
	Day 5	9,171.626	3	3,057.209	.648	.591
	Day 6	30,517.425	3	10,172.475	1.073	.376
	Day 7	71,640.433	3	23,880.144	1.969	.141
Stimulation vs. marital status	Day 0	290.000	3	96.667	.651	.589
	Day 1	1,170.901	3	390.300	1.459	.247
	Day 2	2,399.310	3	799.770	1.390	.266
	Day 3	2,781.950	3	927.317	1.103	.364
	Day 4	8,867.649	3	2,955.883	1.585	.215
	Day 5	5,349.478	3	1,783.159	.378	.770
	Day 6	11,182.766	3	3,727.589	.393	.759
	Day 7	11,678.976	3	3,892.992	.321	.810
Stimulation vs. mother's level of education	Day 0	249.739	3	83.246	.561	.645
	Day 1	1,528.211	3	509.404	1.905	.152
	Day 2	3,898.211	3	1,299.404	2.259	.103
	Day 3	1,171.622	3	390.541	.464	.709
	Day 4	3,638.633	3	1,212.878	.651	.589
	Day 5	16,075.698	3	5,358.566	1.135	.352
	Day 6	29,563.338	3	9,854.446	1.040	.390
	Day 7	14,926.963	3	4,975.654	.410	.747
Stimulus vs. employment	Day 0	63.022	3	21.007	.142	.934
	Day 1	511.625	3	170.542	.638	.597
	Day 2	147.117	3	49.039	.085	.968
	Day 3	1,585.365	3	528.455	.628	.603
	Day 4	618.075	3	206.025	.111	.953
	Day 5	22,914.347	3	7,638.116	1.618	.208
	Day 6	32,515.745	3	10,838.582	1.143	.349
	Day 7	25,267.459	3	8,422.486	.695	.563
Stimulus vs. number of children	Day 0	263.340	3	87.780	.591	.626
	Day 1	372.804	3	124.268	.465	.709
	Day 2	1,260.493	3	420.164	.730	.543
	Day 3	1,389.152	3	463.051	.551	.652
	Day 4	722.533	3	240.844	.129	.942
	Day 5	5,601.936	3	1,867.312	.396	.757
	Day 6	6,993.697	3	2,331.232	.246	.864
	Day 7	11,048.214	3	3,682.738	.304	.822
Stimulus vs. delivery type	Day 0	144.757	3	48.252	.325	.807
	Day 1	218.665	3	72.888	.273	.845
	Day 2	1,216.143	3	405.381	.705	.557
	Day 3	1,685.480	3	561.827	.668	.579
	Day 4	9,796.012	3	3,265.337	1.751	.179
	Day 5	20,566.263	3	6,855.421	1.452	.249
	Day 6	42,636.508	3	14,212.169	1.499	.236
	Day 7	42,851.376	3	14,283.792	1.178	.336
Stimulation vs. early initiation of breastfeeding	Day 0	991.740	3	330.580	2.227	.107
	Day 1	526.062	3	175.354	.656	.586
	Day 2	287.380	3	95.793	.167	.918
	Day 3	559.507	3	186.502	.222	.880
	Day 4	7,029.460	3	2,343.153	1.257	.308
	Day 5	28,932.153	3	9,644.051	2.043	.131
	Day 6	65,473.426	3	21,824.475	2.302	.099
	Day 7	91,552.002	3	30,517.334	2.517	.079

^a R² = .484 (R² adjusted = .096).

^b R² = .552 (R² adjusted = .217).

^c R² = .552 (R² adjusted = .216).

^d R² = .504 (R² adjusted = .132).

^e R² = .539 (R² adjusted = .193).

^f R² = .548 (R² adjusted = .210).

^g R² = .524 (R² adjusted = .167).

^h R² = .548 (R² adjusted = .209).