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Table 4 Stillbirth to live birth ratios, by gestational age (GA) and birth weight (BW) among selected high-income countries, 1995–2005

From: Differences in perinatal and infant mortality in high-income countries: artifacts of birth registration or evidence of true differences?

Gestational age/Birth weight Canada USA Denmark Finland Iceland Norway Sweden
Ratio (95 % CI) Ratio (95 % CI) Ratio (95 % CI) Ratio (95 % CI) Ratio (95 % CI) Ratio (95 % CI) Ratio (95 % CI)
GA (weeks) <22 155.8 (145.9–166.4) 163.6 (161.4–165.9) -a 200.0 (69.5–649.6) - 2073.3 (1698.6–2559.6) -a
22–23 112.1 (105.3–119.3) 79.2 (78.3–80.2) - 90.8 (72.8–113.3) 176.2 (100.5–316.8) 173.9 (149.5–202.6) -
24–25 38.2 (35.6–41.0) 26.7 (26.3–27.1) - 37.0 (29.6–46.0) 42.6 (23.9–73.2) 40.7 (35.2–46.9) -
26–27 18.2 (16.8–19.7) 15.3 (15.0–15.5) - 23.5 (18.9–28.9) 23.0 (11.9–41.5) 20.1 (17.2–23.3) -
28–31 9.6 (9.1–10.1) 7.6 (7.5–7.7) 11.4 (10.4–12.4) 9.4 (8.3–10.5) 10.9 (7.2–16.1) 8.6 (7.7–9.6) 9.2 (8.5–10.0)
32–36 1.7 (1.6–1.7) 1.3 (1.3–1.3) 2.0 (1.9–2.2) 1.6 (1.5–1.7) 2.0 (1.4–2.7) 1.7 (1.6–1.9) 1.9 (1.8–2.0)
37–41 0.2 (0.2–0.2) 0.1 (0.1–0.1) 0.2 (0.2–0.3) 0.1 (0.1–0.1) 0.1 (0.1–0.2) 0.2 (0.2–0.2) 0.2 (0.2–0.2)
≥42 0.2 (0.1–0.2) 0.1 (0.1–0.1) 0.2 (0.2–0.2) 0.1 (0.0–0.1) 0.0 (0.0–0.2) 0.2 (0.2–0.2) 0.2 (0.2–0.2)
Unknown 2.4 (2.1–2.9) 7.0 (7.0–7.1) 1.3 (1.1–1.6) 10.1 (9.2–11.0) 0.0 (0.0–1.9) 2.3 (2.1–2.5) 2.1 (1.4–3.1)
BW (grams) <500 128.6 (121.7–135.8) 139.4 (137.9–140.8) 51.3 (38.7–67.4) 196.4 (162.4–238.2) 383.3 (151.8–1151.6) 1077.9 (947.1–1229.8) 13.5 (8.5–20.6)
500–749 59.5 (56.4–62.7) 32.7 (32.3–33.1) 18.5 (15.3–22.2) 47.0 (41.3–53.4) 71.7 (47.3–107.8) 54.7 (48.9–61.1) 9.6 (7.8–11.8)
750–999 22.0 (20.5–23.6) 13.8 (13.5–14.0) 11.4 (9.6–13.6) 21.1 (18.0–24.6) 21.3 (11.8–36.2) 16.8 (14.4–19.4) 8.6 (7.2–10.1)
1,000–1,499 9.7 (9.1–10.3) 7.5 (7.4–7.6) 7.6 (6.7–8.5) 9.5 (8.3–10.8) 12.1 (7.7–18.2) 8.3 (7.3–9.3) 8.4 (7.6–9.3)
1,500–1,999 4.2 (4.0–4.5) 3.3 (3.2–3.3) 3.8 (3.4–4.2) 4.3 (3.8–4.9) 2.4 (1.1–4.5) 3.8 (3.4–4.3) 4.5 (4.1–5.0)
≥2000 0.2 (0.2–0.2) 0.2 (0.2–0.2) 0.3 (0.2–0.3) 0.2 (0.2–0.2) 0.2 (0.1–0.2) 0.2 (0.2–0.2) 0.2 (0.2–0.3)
Unknown 15.8 (14.7–17.0) 308.0 (302.4–313.4) 7.3 (6.7–8.0) 4.7 (3.4–6.2) 0.0 (0.0–109.1) 48.0 (42.0–54.8) 2.5 (2.0–3.0)
Total 0.6 (0.6–0.6) 0.7 (0.7–0.7) 0.4 (0.4–0.5) 0.4 (0.4–0.4) 0.4 (0.4–0.5) 0.9 (0.9–0.9) 0.4 (0.3–0.4)
  1. Ratios are expressed per 100 live births
  2. aDenmark and Sweden did not report stillbirths <28 weeks until 2004 and 2008, respectively