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Table 3 Correlation of BLL with various risk factors of lead exposure

From: Environmental injustice and childhood lead exposure in peri-urban (ger) areas of Darkhan and Erdenet, Mongolia

Housing characteristics and BLL

Variables

Type of house

< 500 m Distance from big industry

< 1 km from gasoline station

Distance from train station

Recent home renovation

Pet ownership

Remove shoes in the home

BLL

Spearman’s Correlation

0.198

−0.015

0.069

−0.059

0.052

− 0.086

0.118

P-value

0.001

0.795

0.218

0.284

0.573

0.126

0.036

N

335

315

322

329

226

315

319

Heating method and BLL

 

Coal

Wood

Agricultural waste

Natural gas

Heating oil

Electric wall board

Central heating system

BLL

Spearman’s Correlation

0.008

0.144

0.054

−0.059

−0.052

− 0.004

− 0.107

P-value

0.885

0.009

0.329

0.285

0.341

0.946

0.052

N

335

331

331

331

331

331

331

Fuel used for cooking and BLL

 

Coal

Wood

Agricultural waste

Natural gas

Electricity

BLL

Spearman’s Correlation

0.002

0.146

0.074

0.117

−0.130

P-value

0.974

0.008

0.181

0.034

0.018

N

330

331

331

331

331

Exposure risk factors for apartment residents and BLL

Variables

Year structure wasbuilt

# Bed

rooms

#window in the kitchen

Brass water meter

Frequency of home cleaned

Renovation house past 6 months

Water damage roof, walls

BLL

Spearman’s Correlation

−0.244

− 0.098

− 0.146

0.055

− 0.064

0.052

0.199

P-value

0.013

0.297

0.123

0.555

0.492

0.573

0.033

N

105

113

111

115

115

116

113

Exposure risk factors for ger area residents and BLL

Variables

Year ger was built

Years in the home

Type of stove

Smoke meats

#window

Floor gets dusty

Frequency of home cleaning

BLL

Spearman’s Correlation

−0.126

−0.080

0.010

0.032

0.123

0.146

0.111

P-value

0.078

0.231

0.887

0.651

0.107

0.037

0.115

N

197

226

204

198

172

205

202