Table 1.
Results of univariate Poisson regression analysis for variables selected for inclusion in the multivariate model
| Variables | Total (n = 287) | Higher satisfaction levels | PR (95%CI) | p | ||
|---|---|---|---|---|---|---|
| Distal block | n | % | n | % | ||
| Age (years)* | 0.168 | |||||
| Mean (SD) | 29.08 (6.60) | 0.99 (0.97,1.00) | ||||
| Skin color | 0.011 | |||||
| Brown (pardo)/black | 71 | 24.7 | 45 | 63.4 | 1.34 (1.07,1.68) | |
| White | 216 | 75.3 | 102 | 47.2 | 1 | |
| Socioeconomic levela | 0.024 | |||||
| A | 45 | 15.8 | 15 | 33.3 | 0.61 (0.40,0.94) | |
| B/C/D/E | 240 | 84.2 | 131 | 54.6 | 1 | |
| Years of schooling – father’s child*b | 0.017 | |||||
| Mean (SD) | 12.55 (4.23) | 0.96 (0.94,0.99) | ||||
| Living with patner | ||||||
| Yes | 248 | 86.4 | 135 | 54.4 | 1.77 (1.09,2.87) | 0.021 |
| No | 39 | 13.6 | 12 | 30.8 | 1 | |
| Distal intermediate block | n | % | n | % | ||
| Planned pregnancy | 0.096 | |||||
| Yes | 154 | 53.7 | 86 | 55.8 | 1.22 (0.96,1.35) | |
| No | 133 | 46.3 | 61 | 45.9 | 1 | |
| Proximal intermediate block | n | % | n | % | ||
| Type of maternity service | 0.109 | |||||
| Public | 194 | 67.6 | 106 | 54.6 | 1.24 (0.95,1.61) | |
| Private | 93 | 32.4 | 41 | 44.1 | 1 | |
| Type of delivery | 0.043 | |||||
| Vaginal | 149 | 51.9 | 85 | 57.0 | 1.27 (1.01,1.60) | |
| Cesarean section | 138 | 48.1 | 62 | 44.9 | 1 | |
| Breastfeeding support in delivery roomc | 0.152 | |||||
| Yes | 136 | 47.9 | 75 | 55.1 | 1.18 (0.94,1.49) | |
| No | 148 | 52.1 | 69 | 46.6 | 1 | |
| Baby put to breast within first hour of lifec | 0.072 | |||||
| Yes | 189 | 66.5 | 104 | 55.0 | 1.27 (0.98,1.66) | |
| No | 95 | 33.5 | 41 | 43.2 | 1 | |
| Breastfeeding support while rooming ina | 0.076 | |||||
| Yes | 255 | 89.5 | 136 | 53.3 | 1.60 (0.95,2.69) | |
| No | 30 | 10.5 | 10 | 33.3 | 1 | |
| Use of formula at maternity servicea | 0.051 | |||||
| Yes | 94 | 33.0 | 40 | 42.6 | 0.77 (0.59,1.00) | |
| No | 191 | 67.0 | 106 | 55.5 | 1 | |
| Use of nipple shield at maternity service | 0.049 | |||||
| Yes | 36 | 12.5 | 12 | 33.3 | 0.62 (0.38,0.99) | |
| No | 251 | 87.5 | 135 | 53.8 | 1 | |
| Intended breastfeeding durationd | 0.024 | |||||
| ≥ 12 months | 192 | 78.0 | 105 | 54.7 | 1.55 (1.06,2.28) | |
| < 12 months | 54 | 22.0 | 19 | 35.2 | 1 | |
| Birth weight (g) | 0.142 | |||||
| ≤ 3280 | 144 | 50.2 | 80 | 55.6 | 0.84 (0.67,1.06) | |
| > 3280 | 143 | 49.8 | 67 | 46.9 | 1 | |
| Proximal block | n | % | n | % | ||
| Low milk supply** | < 0.001 | |||||
| No | 203 | 70.7 | 120 | 59.1 | 1.84 (1.32,2.56) | |
| Yes | 84 | 29.3 | 27 | 32.1 | 1 | |
| Pain while breastfeeding** | 0.020 | |||||
| No | 105 | 36.6 | 63 | 60.0 | 1.30 (1.04,1.62) | |
| Yes | 182 | 63.4 | 84 | 46.2 | 1 | |
| Nipple crack** | 0.019 | |||||
| No | 152 | 53.0 | 88 | 57.9 | 1.32 (1.05,1.67) | |
| Yes | 135 | 47.0 | 59 | 43.7 | 1 | |
| Difficulty latching on** | 0.020 | |||||
| No | 224 | 78.0 | 125 | 55.8 | 1.30 (1.04,1.62) | |
| Yes | 63 | 22.0 | 22 | 34.9 | 1 | |
| Nipple anatomy problems** | 0.010 | |||||
| No | 228 | 79.4 | 126 | 55.3 | 1.60 (1.12;2.28) | |
| Yes | 59 | 20.6 | 21 | 35.6 | 1 | |
| Breast milk oversupply** | 0.155 | |||||
| No | 129 | 44.9 | 60 | 46.5 | 0.84 (0.67,1.06) | |
| Yes | 158 | 29.3 | 87 | 55.1 | 1 | |
| Use of formula or other milk at 30 days | < 0.001 | |||||
| No | 193 | 70.2 | 119 | 61.7 | 1.94 (1.42,2.65) | |
| Yes | 82 | 29.8 | 27 | 32.9 | 1 | |
| Use of pacifier at 30 days | 0.007 | |||||
| No | 88 | 30.7 | 55 | 62.5 | 1.35 (1.08,1.68) | |
| Yes | 199 | 69.3 | 92 | 46.2 | 1 | |
PR Prevalence ratio, 95%CI 95% confidence interval, SD Standard deviation
* Variables continuous
* * All difficulties with breastfeeding were reported at the interview
a Social classes (A, B1, B2, C1, C2, D-E) according to ABEP, 201515. Missing values: 2
b Missing values: 16
c Missing values: 3
d 41 did not know