Using new satellite based exposure methods to study the association between pregnancy pm2.5 exposure, premature birth and birth weight in Massachusetts

Table 1 Descriptive statistics: Live births in eastern Massachusetts, 2000–2008

Characteristic	All births (% Total)	Mean Birth Weight (Grams)	SD
Sex
Male	49.36	3262.38	616.86
Female	51.14	3379.14	648.75
Race
White	71.70	3368.2	627.35
African-American	7.99	3165.04	688.52
Hispanic	20.31	3220.94	623.57
Education (years)
≤ 8	2.68	3253.04	597.64
>8-12	33.53	3259.15	635.04
13-15	42.62	3333.61	637.41
≥15	21.16	3375.29	621.90
Age of mother
≤ 20	7.50	3192.03	612.17
20-29	34.72	3299.77	617.60
30-34	32.11	3359.42	634.44
35-39	20.41	3356.59	654.62
>39	5.26	3292.81	692.11

ISSN: 1476-069X