Table 4.

Total effect of 18 POPs and important exposures identified from WQS with each LOD accommodation approach, with NHANES 2001–2002

	Total effect $\mathit{\psi }$ (SE)	Important exposures (weight)
Complete case	0.014 (0.009)	PCB169 (0.538), 1,2,3,4,6,7,8-hxcdf (0.125), PCB126 (0.113)
LOD/$\sqrt{2}$	0.018 (0.005)	2,3,4,7,8-pncdf (0.350), PCB126 (0.186), 1,2,3,4,6,7,8-hxcdf (0.184)
MI	0.015 (0.006)	PCB169 (0.580), 1,2,3,4,6,7,8-hxcdf (0.153), PCB126 (0.080)
Truncated MI	0.018 (0.005)	2,3,4,7,8-pncdf (0.346), PCB126 (0.186), 1,2,3,4,6,7,8-hxcdf (0.183)
F-AFT	0.017 (0.005)	2,3,4,7,8-pncdf (0.328), PCB126 (0.189), 1,2,3,4,6,7,8-hxcdf (0.184), PCB194 (0.062)

Relative importance was reported for exposures with the weight over 1/18

Abbreviations: Imputation by LOD/$\sqrt{2}$ (LOD/$\sqrt{2}$), MI Conventional multiple imputation, Truncated MI Truncated multiple imputation, F-AFT Imputation by estimates using the AFT model