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. Author manuscript; available in PMC: 2016 Nov 30.
Published in final edited form as: Environ Int. 2013 Jan 8;53:1–8. doi: 10.1016/j.envint.2012.11.010

Table 3.

Geometric mean creatinine adjusted hydroxyl-PAH concentrations (ng/g creatinine) by trimester adjusted for age of the subject, highest grade of education, SES and the district where the subject lived and fuel type.

Trimester 1-NAP 2-NAP 2-FLU 3-FLU 9-FLUa,c 1-PHEa 2-PHEa 3-PHE 4-PHEa,c 1-PYRa,b
First 5556 4961 643 146 1338 730 284 271 133 381
UCL1 9883 8027 943 228 1984 1038 420 396 203 593
LCL2 3124 3066 438 94 902 514 192 186 87 245
Second 4845 4912 589 135 1387 824 316 256 153 469
UCL 8526 7783 845 206 2031 1140 459 366 229 718
LCL 2753 3100 410 88 947 595 218 180 102 306
Third 5444 5180 596 115 1809 998 403 276 196 570
UCL 9703 8378 881 180 2688 1417 597 404 300 890
LCL 3054 3202 404 73 1218 703 273 189 128 365

Statistically significant differences at p=0.05 are lettered.

a

third trimester significantly higher than first trimester.

b

second trimester significantly higher than first trimester.

c

third trimester significantly higher than second trimester.

1

LCL: lower confidence limit.

2

UCL — upper confidence limit.