Characteristics | Prevalence % (95%CI) | PR (95%CI) |
---|---|---|
Infant’s sex | p = 0.341 | |
Male | 54.6 (52.5–56.8) | 1.00 (Ref.) |
Female | 56.1 (53.9–58.3) | 1.03 (0.97–1.09) |
Maternal skin color | p < 0.001 | |
Black | 47.7 (43.8–51.5) | 1.00 (Ref.) |
Brown | 48.6 (44.3–52.8) | 1.02 (0.90–1.15) |
White | 58.4 (56.6–60.2) | 1.23 (1.12–1.34) |
Family income (quintiles) | p < 0.001 | |
Q1 | 43.4 (39.9–47.0) | 1.00 (Ref.) |
Q2 | 53.2 (49.7–56.7) | 1.23 (1.10–1.36) |
Q3 | 57.8 (54.4–61.3) | 1.33 (1.20–1.47) |
Q4 | 56.5 (53.2–59.8) | 1.30 (1.18–1.44) |
Q5 | 67.5 (64.0–71.0) | 1.55 (1.41–1.71) |
Maternal education (years of schooling) | p < 0.001 | |
0–4 | 42.5 (37.4–47.6) | 1.00 (Ref.) |
5–8 | 44.9 (41.9–47.9) | 1.06 (0.92–1.21) |
9–11 | 56.1 (53.5–58.6) | 1.32 (1.16–1.50) |
≥12 | 67.0 (64.4–69.5) | 1.58 (1.39–1.79) |
Maternal age | p < 0.001 | |
≤18 | 36.2 (31.5–40.8) | 1.00 (Ref.) |
19–24 | 48.5 (45.6–51.4) | 1.34 (1.16–1.54) |
25–30 | 57.4 (54.6;60.2) | 1.59 (1.38–1.82) |
31–36 | 65.9 (62.9–68.8) | 1.82 (1.59–2.08) |
≥37 | 63.8 (58.7–68.9) | 1.76 (1.52–2.05) |
Parity | p = 0.172 | |
≥5 | 51.6 (43.8–59.4) | 1.00 (Ref.) |
4 | 53.8 (46.6–61.0) | 1.04 (0.83–1.27) |
3 | 59.4 (54.9–63.9) | 1.15 (0.97–1.36) |
2 | 56.6 (53.8–59.3) | 1.09 (0.93–1.28) |
1 | 54.1 (51.9–56.3) | 1.05 (0.90–1.23) |
Maternal cohabitation with a partner | p < 0.001 | |
No | 44.9 (40.8–48.9) | 1.00 (Ref.) |
Yes | 57.1 (55.4–58.7) | 1.27 (1.16–1.40) |
Who advised on infant sleep position | p < 0.001 | |
Nobody | 43.1 (40.7–45.4) | 1.00 (Ref.) |
Child’s father or grandparents | 31.8 (24.5–39.2) | 0.74 (0.58–0.94) |
Physician | 66.3 (63.8–68.7) | 1.54 (1.44–1.64) |
Other healthcare professional | 65.1 (61.5–68.7) | 1.51 (1.40–1.63) |
Other | 74.2 (66.3–82.0) | 1.72 (1.53–1.94) |
Breastfeeding at 3 months* | p = 0.132 | |
No | 53.2 (50.0–56.4) | 1.00 (Ref.) |
Yes | 56.0 (54.3–57.8) | 1.05 (0.98–1.13) |
Bed sharing at 3 months of age | p < 0.001 | |
Yes | 46.1 (43.8–48.3) | 1.00 (Ref.) |
No | 62.1 (60.0–64.1) | 1.35 (1.27–1.43) |