Table 2.
Longitudinal logistic regression model*, with odds ratios for group assignment and infant age
| 2–3 weeks of
age (N=958) |
2–3 months of
age (N=716) |
5–6 months of
age (N=637) |
Group (standard vs enhanced) |
Infant age | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Standard (N=502) |
Enhanced (N=456) |
Standard (N=369) |
Enhanced (N=347) |
Standard (N=332) |
Enhanced (N=305) |
aOR (95% CI) |
p- valu e |
aOR (95% CI) |
p- value |
|
|
| ||||||||||
| Usual Sleep Position | ||||||||||
|
| ||||||||||
| Back | 482 (96.6%) | 433(92.2 %) | 324(87.8 %) | 291(83.9 %) | 263(79.2 %) | 246(80.7 %) | 1.15 (0.79, 1.69) | 0.46 | 1.01 (1.010, 1.016) | <0.001 |
| Side | 11(2.2%) | 17(3.7%) | 22(6.0%) | 21(6.0%) | 25(7.5%) | 20(6.6%) | ||||
| Prone | 6(1.2%) | 5(1.1%) | 23(6.2%) | 35(10.1%) | 44(13.2%) | 39(12.8%) | ||||
|
| ||||||||||
| Sleep position last night | ||||||||||
|
| ||||||||||
| Back | 473 (95.0%) | 429(94.7 %) | 327(88.6 %) | 285(82.1 %) | 268(80.7 %) | 241(79.0 %) | 1.35 (0.90, 2.02) | 0.15 | 1.01 (1.008, 1.014) | <0.001 |
| Side | 18(3.6%) | 19(4.2%) | 19(5.2%) | 28(8.1%) | 26(7.8%) | 27(8.8%) | ||||
| Prone | 7(1.4%) | 5(1.1%) | 3(0.8%) | 32(9.2%) | 38(11.4%) | 37(12.1%) | ||||
|
| ||||||||||
| Reasons for sleep position last night | ||||||||||
|
| ||||||||||
| Prevent SIDS | 238 (49.7%) | 202(45.9 %) | 170(47.5 %) | 151(44.2 %) | 150(46.9 %) | 159(52.1 %) | 0.86 (0.68, 1.09) | 0.22 | 1.00 (0.998, 1.00) | 0.47 |
| Prevent suffocation | 132(27.6 %) | 132(30.0 %) | 91(25.4%) | 88(25.7%) | 63(16.7%) | 97(31.8%) | 1.03 (0.82, 1.29) | 0.79 | 0.99 (0.995, 0.998) | <0.001 |
| Afraid of vomiting/choking | 32(6.7%) | 26(5.9%) | 20(5.6%) | 38(5.3%) | 11(3.4%) | 15(4.9%) | 1.05 (0.71, 1.55) | 0.79 | 0.99 (0.988, 0.993) | <0.001 |
| Baby likes/sleeps better | 34(7.1%) | 33(7.5%) | 52(14.5%) | 60(17.5%) | 75(23.4%) | 85(27.9%) | 1.20 (0.99, 1.64) | 0.24 | 1.01 (1.005, 1.009) | <0.001 |
| Somebody suggested it | 25 (5.2%) | 27(6.1%) | 11(3.1%) | 7(2.0%) | 6(1.9%) | 4(1.3%) | 0.97(0.62, 1.50) | 0.89 | 0.99 (0.986, 0.994) | <0.001 |
|
| ||||||||||
| Belief that sleeping prone increases SIDS risk | ||||||||||
|
| ||||||||||
| Definitely no or doubtful | 44 (8.7%) | 39 (8.6%) | 59 (16.0%) | 40 (11.5%) | 84 (25.4%) | 64 (21.0%) | 1.01 (0.71, 1.42) | 0.98 | 0.992 (0.990, 0.994) | <0.001 |
| Unsure | 36(7.2%) | 23(5.1%) | 20(5.4%) | 14(14.0%) | 15(4.5%) | 15(4.6%) | ||||
| Possibly or definitely yes | 428 (84.3%) | 392 (86.3%) | 290 (78.6%) | 293 (84.4%) | 232 (70.1%) | 226 (74.1%) | ||||
|
| ||||||||||
| Belief that sleeping prone increases suffocation risk | ||||||||||
|
| ||||||||||
| Definitely no or doubtful | 22 (4.4%) | 12 (2.6%) | 28 (7.6%) | 27 (7.8%) | 53 (16.0%) | 39 (12.8%) | 1.19 (0.95, 1.49) | 0.12 | 0.993 (0.991, 0.994) | <0.001 |
| Unsure | 7(1.4%) | 6(1.3%) | 6(1.6%) | 3(0.9%) | 4(1.2%) | 6(2.0%) | ||||
| Possibly or definitely yes | 469 (94.2%) | 436 (96.0%) | 335 (90.8%) | 316 (91.3%) | 274 (82.8%) | 259 (85.2%) | ||||
|
| ||||||||||
| What things do you do to protect your baby from SIDS? | ||||||||||
|
| ||||||||||
| Place baby on back | 422(84.1 %) | 372(81.6 %) | 289(78.3 %) | 242(69.7 %) | 227(68.4 %) | 208(68.2 %) | 0.79 (0.60, 1.05) | 0.11 | 0.994 (0.993, 0.996) | <0.001 |
| Place baby on side | 14(2.8%) | 22(4.8%) | 23(6.2%) | 23(6.3%) | 27(8.1%) | 14(4.6%) | 1.84 (0.93, 3.65) | 0.08 | 1.005 (1.003, 1.011) | 0.013 |
|
| ||||||||||
| What things do you do to protect your baby from suffocation? | ||||||||||
|
| ||||||||||
| Place baby on back | 407(81.1 %) | 354(77.6 %) | 280(75.9 %) | 235(67.7 %) | 223(67.2 %) | 197(64.6 %) | 0.76 (0.59, 0.99) | 0.04 | 0.996 (0.994, 0.997) | <0.001 |
| Place baby on side | 12(2.4%) | 13(2.8%) | 17(4.6%) | 20(5.8%) | 24(7.2%) | 15(4.9%) | 0.98 (0.59, 1,65) | 0.95 | 1.005 (1.003, 1.009) | 0.001 |
*
Controlling for baseline sleep position, feeding mode, WIC status, and educational status