Table 1 Sample characteristics of mothers who intended to exclusively breastfeed, by actual breastfeeding durationa
Characteristics | Full sample | Exclusive breastfeeding | Â | ||||
|---|---|---|---|---|---|---|---|
|  |  | ≥ 3mos | ≤ 3 mos | p-valuesb | ≥ 6mos | ≤ 6 mos | p-valuesb |
|  | N = 1799 (%) | n = 618 (%) | n = 1181 (%) |  | n = 157 (%) | n =1642 (%) |  |
Strongly value EBF | Â | Â | Â | Â | Â | Â | Â |
 Yes | 647 (36.0) | 298 (48.2) | 349 (29.6) | <.0001 | 90 (57.3) | 557 (33.9) | <.0001 |
 No | 1152 (64.0) | 320 (51.8) | 832 (70.5) |  | 67 (42.7) | 1085 (66.1) |  |
Married | Â | Â | Â | Â | Â | Â | Â |
 Yes | 1410 (82.7) | 564 (91.7) | 864 (78.0) | <.0001 | 137 (93.2) | 285 (18.3) | .0017 |
 No | 295 (17.3) | 51 (8.3) | 244 (22.0) |  | 10 (6.8) | 1273 (81.7) |  |
Prenatal smoking | Â | Â | Â | Â | Â | Â | Â |
 Non- smokers | 1691 (94.0) | 603 (97.6) | 1088 (92.1) | <.0001 | 153 (97.4) | 1538 (93.7) | .0564 |
 Current smokers | 108 (6.0) | 15 (2.4) | 93 (7.9) |  | 04 (2.6) | 104 (06.3) |  |
Parity | Â | Â | Â | Â | Â | Â | Â |
 Primipara | 582 (33.0) | 133 (21.6) | 449 (39.0) | <.0001 | 35 (22.6) | 547 (34) | .0118 |
 Multipara | 1181 (67.0) | 479 (78.4) | 702 (61.0) |  | 120 (77.4) | 1061 (66) |  |
Prenatal employment | Â | Â | Â | Â | Â | Â | Â |
 No | 719 (45.6) | 285 (50.7) | 434 (42.8) | <.0001 | 80 (58) | 639 (44.4) | .0092 |
 Yes | 858 (54.4) | 277 (49.3) | 581 (57.2) |  | 58 (42) | 800 (55.6) |  |
Race/Ethnicity | Â | Â | Â | Â | Â | Â | Â |
 White | 1528 (87.2) | 550 (90.9) | 978 (85.2) | .0021 | 138 (90.8) | 1390 (86.8) | .3304 |
 Non- White | 225 (12.8) | 55 (9.1) | 170 (14.8) |  | 14 (9.2) | 211 (13.2) |  |
Income status | Â | Â | Â | Â | Â | Â | Â |
  < 185 % of FPLc | 656 (36.5) | 234 (37.9) | 422 (35.7) | 0.36 | 70 (44.6) | 586 (35.7) | .0429 |
 185 %–349 % of FPL | 690 (38.4) | 223 (36.1) | 467 (39.6) |  | 47 (29.9) | 643 (39.2) |  |
  > 350 % of FPL | 453 (25.2) | 161 (26.0) | 292 (24.7) |  | 40 (25.5) | 413 (25.1) |  |
Maternal age | Â | Â | Â | Â | Â | Â | Â |
 18–24 years | 477 (26.5) | 107 (17.4) | 370 (31.3) | <.0001 | 32 (20.5) | 445 (27.1) | .2022 |
 25–34 years | 1037 (57.7) | 400 (64.8) | 637 (53.9) |  | 98 (62.8) | 939 (57.2) |  |
  ≥ 35 years | 284 (15.8) | 110 (17.8) | 174 (14.8) |  | 26 (16.7) | 258 (15.7) |  |
Maternal education | Â | Â | Â | Â | Â | Â | Â |
  ≤ High school | 264 (15.6) | 70 (11.7) | 194 (17.6) | <.0001 | 15 (10.3) | 249 (16.0) | .2139 |
 Some college | 679 (40.0) | 210 (35.3) | 469 (42.6) |  | 61 (42.1) | 618 (39.8) |  |
  ≥ College graduate | 754 (44.4) | 316 (53.0) | 438 (39.8) |  | 69 (47.6) | 685 (44.2) |  |
Plans to return to work | Â | Â | Â | Â | Â | Â | Â |
  ≤ 6 weeks | 176 (11.8) | 51 (9.7) | 125 (12.9) | <.0001 | 05 (4.6) | 171 (12.4) | <.0001 |
  > 6 weeks | 712 (47.7) | 209 (39.9) | 503 (52.0) |  | 28 (25.7) | 684 (49.4) |  |
Did not plan to work | 604 (40.5) | 264 (50.4) | 340 (35.1) | Â | 76 (69.7) | 528 (38.2) | Â |
|  | Full Sample | ≥ 3mos | ≤ 3 mos | p-valuesb | ≥ 6mos | ≤ 6 mos | p-valuesb |
Delivery mode | Â | Â | Â | Â | Â | Â | Â |
 Vaginal | 1326 (73.71) | 489 (79.13) | 837 (70.87) | <.0001 | 127 (80.9) | 1199 (73.0) | .02 |
 Planned C-section | 254 (14.12) | 83 (13.43) | 171 (14.48) |  | 22 (14.0) | 232 (14.1) |  |
 Emergency C-section | 219 (12.17) | 46 (7.44) | 173 (14.65) |  | 8 (5.1) | 211 (12.9) |  |
Baby’s father support |  |  |  |  |  |  |  |
 No | 412 (22.9) | 89 (14.4) | 323 (27.3) | <.0001 | 18 (11.5) | 394 (24) | .0004 |
 Yes | 1387 (77.1) | 529 (85.6) | 858 (72.7) |  | 139 (88.5) | 1248 (76) |  |
Maternal obesity | Â | Â | Â | Â | Â | Â | Â |
 Not obese | 1372 (77.2) | 497 (81.3) | 875 (75.0) | 0.0026 | 129 (83.2) | 1243 (76.6) | .0616 |
 Obese | 405 (22.8) | 114 (18.7) | 291 (25.0) |  | 26 (16.8) | 379 (23.4) |  |