Table 4

Summary regression results for age trends for any breastfeeding

Stratum name

Stratum characteristics

Intercept (95% confidence interval)

Slope (95% confidence interval)

Standard error of the residual


AfrD

Africa: high adult, high child mortality

4.28 (4.05, 4.51)

-0.20 (-0.21, -0.19)

1.30

AfrE

Africa: very high adult, high child mortality

4.71 (4.43, 5.00)

-0.20 (-0.21, -0.18)

1.12

AmrB

Americas: low child, low adult mortality

1.34 (1.16, 1.52)

-0.12 (-0.13, -0.11)

0.79

AmrD

Americas: high adult, high child mortality

3.57 (3.29, 3.86)

-0.18 (-0.20, -0.17)

0.83

EmrB

Eastern Mediterranean: low child, low adult mortality

2.85 (2.58, 3.12)

-0.22 (-0.23, -0.20)

0.36

EmrD

Eastern Mediterranean: high adult, high child mortality

3.40 (3.16, 3.64)

-0.17 (-0.18, -0.16)

0.80

SearB

South-east Asia: low child, low adult mortality

3.58 (3.36, 3.79)

-0.14 (-0.15, -0.13)

0.49

SearD

South-east Asia: high adult, high child mortality

4.03 (3.72, 4.34)

-0.14 (-0.15, -0.12)

0.89

WprB

Western Pacific: low child, low adult mortality

2.18 (1.77, 2.60)

-0.14 (-0.16, -0.12)

2.77


Regressions use minimum chi-square estimation with dependent variable logarithm of prevalence odds (that is, Log(p/1 - p), where p is prevalence of any breastfeeding), and independent variable oldest month of age by two-month age groups; regressions for category-A countries stratified by geographical and epidemiologic criteria as noted in the table; any breastfeeding estimated for 18 age groups 0–1 to 34–35 months of age. Data sources listed in the Annex (Additional file 1).

Lauer et al. BMC Medicine 2004 2:26   doi:10.1186/1741-7015-2-26

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