Table 3

Model-estimated birth weight distribution and mortality characteristics for the 2001 sample populations

Birth Cohort

Eur. Am. F.

Af. Am. F.

Eur. Am. M.

Af. Am. M.






estimate

LCI UCI

estimate

LCI UCI

estimate

LCI UCI

estimate

LCI UCI

"Normal" Subpopulation

Proportion (%)

94.0

(93.5; 94.3)

90.7

(90.5; 91.0)

93.2

(92.7; 93.6)

90.6

(90.5; 90.8)

Mean (g)

3380

(3378; 3382)

3169

(3168; 3170)

3509

(3507; 3512)

3288

(3287; 3289)

Standard Deviation (g)

455

(453; 457)

455

(454; 457)

474

(472; 476)

472

(471; 473)

LBW Rate (%)

2.8

(2.7; 2.9)

7.0

(6.9; 7.0)

1.8

(1.7; 1.9)

4.8

(4.7; 4.9)

Death Rate #

2.3

(2.1; 2.6)

4.4

(4.2; 4.5)

2.9

(2.7; 3.2)

5.2

(5.0; 5.4)

Percent of Total DR (%)

63.1

(58.2; 67.8)

54.7

(53.5; 56.1)

60.5

(55.6; 65.0)

49.0

(47.5; 50.5)

"Compromised" Subpopulation

Proportion (%)

6.0

(5.7; 6.5)

9.3

(9.0; 9.5)

6.8

(6.4; 7.3)

9.4

(9.2; 9.5)

Mean (g)

2678

(2630; 2730)

2039

(1995; 2072)

2739

(2684; 2785)

2034

(1995; 2072)

Standard Deviation (g)

1098

(1067; 1126)

1303

(1289; 1320)

1098

(1076; 1121)

1336

(1323; 1350)

LBW Rate (%)

42.3

(40.4; 43.8)

58.5

(57.7; 59.2)

40.4

(38.7; 42.4)

58.3

(57.5; 59.1)

Death Rate #

21.2

(18.3; 24.9)

35.5

(33.7; 37.1)

26.3

(23.0; 30.0)

52.4

(50.3; 55.0)

Percent of Total DR (%)

36.9

(32.2; 41.8)

45.2

(43.9; 46.5)

39.5

(35.0; 44.4)

51.0

(49.5; 52.5)

Total Population

LBW Rate (%)

5.2

(5.1; 5.3)

11.8

(11.7; 11.9)

4.5

(4.4; 4.6)

9.8

(9.8; 9.9)

Death Rate #

3.5

(3.2; 3.7)

7.3

(7.1; 7.4)

4.5

(4.3; 4.8)

9.6

(9.4; 9.9)


Eur. = European; Af. = African; Am. = American; F. = females; M. = males

LCI = lower 95% confidence interval; UCI = upper 95% confidence interval; LBW = low birth weight (i.e. <2500 grams); DR = death rate

#: death per 1000 births

Gage et al. BMC Pregnancy and Childbirth 2010 10:86   doi:10.1186/1471-2393-10-86

Open Data