Blood Lead Levels and Risk Factors among Preschool Children in a Lead Polluted Area in Taizhou, China

Table 1

Main characteristics of the preschool children included in the study.

Characteristics	(%)
Sex
Male	1087 (53.9%)
Female	931 (46.1%)
Age (years)
<3	65 (3.2%)
3 to <4	294 (14.6%)
4 to <5	604 (29.9%)
5 to <6	670 (33.2%)
≥6	385 (19.1%)
Residence
Outlander	765 (37.9%)
Native	1253 (62.1%)
Town
Fengjiang	1264 (62.6%)
Pengjie	754 (37.4%)
Father’s education
Primary school	585 (29.0%)
Middle and high school	1335 (66.2%)
College or higher	98 (4.9%)
Father’s occupation
Lead-related	1033 (51.2%)
Not lead-related	985 (48.8%)
Mother’s education
Primary school	709 (35.1%)
Middle and high school	1197 (59.3%)
College or higher	112 (5.6%)
Mother’s occupation
Lead-related	926 (45.9%)
Not lead-related	1092 (54.1%)
Cares’ education
Primary school	877 (43.5%)
Middle and high school	1055 (52.3%)
College or higher	86 (4.3%)
Yearly household income (RMB)
<10000	679 (33.7%)
10000–15000	977 (48.4%)
>15000	362 (17.9%)