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. Author manuscript; available in PMC: 2010 Jun 9.
Published in final edited form as: J Toxicol Environ Health A. 2010 Jan;73(15):1003–1020. doi: 10.1080/15287390903566591

TABLE 4.

Multiple Regression Model Coefficientsa Demonstrating Simultaneous Associations Between Affect (Profile on Mood States, BDI, and SCL-90), Urinary Mercury, and 5-HTTLPR Variant

Dentists (n = 164)

Urinary Hg 5-HTTLPRVariant Magnitude of
additive effect
(difference)


Test and affect Beta p Beta p Fold change
Profile on Mood States (n = 6)
   Anger ns 0.24 .000
   Depression ns 0.22 .001
   Tension ns 0.16 .02
  Confusion 0.13 .02 0.19 .01 0.92 0.22
   Vigor ns 0.12 .04
   Total ns 0.21 .001
Beck Depression Index (n = 4)
   BDI Sum 0.29 .02 ns
   BDI Factor 1 Listless ns 0.26 .001
   BDI Factor 2 Worthlessness ns 0.24 .007
   BDI Factor 3 Depression ns 0.23 .005
   BDI Factor 4 Agitation ns 0.23 .006
The Symptom Checklist-90 (n = 4)
   SCL90 Sum 0.18 .03 ns
   SCL90 Factor 2 Listless 0.16 .05 0.19 .04 0.66 1.27
   SCL90 Factor 3 Fearful ns 0.17 .04

Dental assistants (n = 101)

Profile on Mood States (n = 6)
   Anger 0.19 .03 0.19 .05 1.39 0.36
   Depression 0.23 .02
   Tension 0.19 .04 0.18 .05 2.67 0.25
   Confusion ns 0.28 .02
   Fatigue 0.20 .05 0.32 .005 3.82 0.39
   Vigor −0.21 .03 −0.25 .01 −1.98 0.14
   Total ns 0.23 .02
Beck Depression Index (n=4)
   BDI Sum 0.35 .01
   BDI Factor 1 Listless 0.34 .003 0.55 .000 0.168 0.11
   BDI Factor 2 Worthlessness 0.15 .03 0.18 .04 0.168 0.13
The Symptom Checklist-90
   SCL90 Sum ns 0.25 .04
   SCL90 Factor 1 Distrustful ns 0.28 .01
   SCL90 Factor 3 Fearful 0.33 .02 0.45 .009 1.27 1.49
   SCL90 Factor 4 Guilty 0.31 .03 (−0.25) .04 (−0.77) (2.37)
a

Regression models are restricted to Race = white. For dentists, models control for age, number of alcoholic drinks per week, and premorbid intelligence (vocabulary). Regression models for dental assistants also include the level of education; analyses in the unexpected direction are noted by parentheses.