TABLE 4

Multivariate Analysis of Factors Associated with Intentions and Practice

VariablesanAll Positions Reported as Intended to Be Used (N = 3297)baORc Intend Only Supine, Practice Other (95% CI)aORc Intend Side or Side and Supine (95% CI)aORc Intend include Prone (95% CI)
% Intend Only Supine, Practice Only Supine% Intend Only Supine, Practice Other% Intend Side or Side and Supine% Intend Includes Prone
n = 1379 (43.7%)n = 432 (13.9%)n = 891 (26.1%)n = 548 (14.9%)
Maternal race
 White127551.215.918.812.5RefRefRef
 African American82832.410.729.026.51.2 (0.83–1.71)1.7 (1.23–2.43)2.5 (1.57–3.85)
 Hispanic91233.911.639.114.71.5 (0.95–2.21)2.2 (1.42–3.28)1.5 (0.80–2.65)
 Other28143.913.527.413.01.0 (0.56–1.67)1.6 (0.74–3.34)1.4 (0.58–3.30)
Maternal age (y)
 14–1927536.314.930.516.91.8 (0.81–4.17)1.2 (0.53–2.87)1.0 (0.42–2.62)
 20–2479537.71331.217.21.6 (0.96–2.67)1.7 (0.97–3.17)1.4 (0.87–2.33)
 25–2999345.713.124.015.9RefRefRef
 30–3477749.512.523.912.00.8 (0.52–1.10)1.0 (0.68–1.51)0.7 (0.37–1.35)
 ≥3545742.818.824.013.31.2 (0.89–1.60)0.7 (0.38–1.19)0.7 (0.35–1.39)
Education
 <HS478289.240.919.61.4 (0.78–2.47)1.7 (0.92–3.09)2.1 (1.16–3.73)
 HS or GED83341.510.530.516.7RefRefRef
 Some college104145.714.424.513.81.4 (0.99–1.88)1.1 (0.75–1.57)0.7 (0.42–1.31)
 College grad62449.415.719.014.71.6 (0.91–2.94)1.2 (0.69–2.02)1.2 (0.60–2.60)
 Grad school30849.622.018.09.13.0 (1.46–6.26)1.8 (0.87–3.92)1.2 (0.42–3.54)
Perceived control
 Up to mother303443.613.726.315.1RefRefRef
 Not up to mother25444.816.424.612.51.0 (0.67–1.64)1.3 (0.60–2.81)3.5 (1.70–7.25)
Subjective norms
 Only supine158971.717.37.92.7RefRefRef
 Side or side and supine77212.08.969.78.91.3 (0.84–2.11)9.0 (5.15–13.1)6.2 (3.39–11.2)
 Any prone52011.66.826.653.50.9 (0.50–1.58)4.0 (2.34–6.85)11.6 (7.24–18.7)
 No positive25527.414.724.225.21.6 (0.88–2.99)3.3 (1.87–5.81)5.4 (2.93–10.1)
Positive attitudes
 Only supine147479.414.24.51.6RefRefRef
 Side or side and supine104614.115.362.86.65.4 (3.63–7.96)26.3 (18.1–38.2)8.3 (5.24–13.3)
 Any prone6046.49.023.658.27.3 (3.84–13.8)29.6 (17.0–51.7)130 (71.8–236)
 No positive5636.911.510.329.31.3 (0.42–4.21)3.8 (0.96–15.0)18.2 (5.30–52.8)
Doctor advice
 Advice consistent with recommendation177362.516.212.97.70.8 (0.53–1.11)0.5 (0.36–0.67)0.6 (0.39–0.93)
 No advice66033.514.231.318.2RefRefRef
 Advice not consistent with recommendation8198.87.953.528.51.3 (0.57–3.00)1.9 (1.07–3.32)2.6 (1.52–4.47)
  • N = 47 mothers with no intended position included in the analysis but not included in the table because of small sample size. GED, general education development; HS, high school; Ref, reference.

  • a In addition to all variables in the table the model adjusted for: maternal parity and marital status and infant sex, age, and birth weight categories.

  • b The numbers associated with the demographics do not always add up to 3297 because of some missing data.

  • c All aORs are compared with Intend Only Supine, Practice Only Supine group.