Table 5.

OR for presence of chromosomal aberrations and translocation with doubling of naphthalene metabolite levels and mean ratio of frequency of chromosomal aberrations and translocation with doubling of naphthalene metabolite levels

Total (n = 113)Dominican (n = 66)African-American (n = 47)Ethnic group differencec
Occurrence ofOR (95% CI)AORa (95% CI)AORb (95% CI)AORb (95% CI)P
Aberration
 1-Naphthol1.23 (1.02–1.48)e1.23 (1.01–1.48)e1.63 (1.21,2.19)f0.90 (0.68–1.20)0.005
 2-Naphthol1.17 (0.90–1.51)1.19 (0.90–1.56)1.44 (1.02–2.04)e0.77 (0.46–1.27)0.04
 NAPH1.27 (.997–1.63)d1.29 (1.00–1.65)e1.95 (1.29–2.95)f0.84 (0.58–1.23)0.003
Translocation
 1-Naphthol1.25 (1.00–1.56)d1.27 (1.01–1.59)e1.55 (1.11–2.17)e1.03 (0.74–1.43)0.09
 2-Naphthol1.50 (1.08–2.09)e1.69 (1.16–2.46)f1.92 (1.20–3.08)f1.24 (0.65–2.39)0.29
 NAPH1.47 (1.09–1.99)e1.55 (1.13–2.12)f2.15 (1.30–3.57)f1.12 (0.73–1.73)0.06
Total (n = 113)Dominican (n = 66)African-American (n = 47)Ethnic group differencec
Frequency ofMR (95% CI)MRg (95% CI)MRh (95% CI)MRh (95% CI)P
Aberration
 1-Naphthol1.16 (0.97–1.39)1.18 (0.98–1.42)i1.38 (1.10–1.72)f0.90 (0.65–1.25)0.049
 2-Naphthol1.09 (0.87–1.37)1.11 (0.87–1.41)1.18 (0.89–1.57)0.98 (0.62–1.55)0.54
 NAPH1.19 (0.95–1.50)1.23 (0.96–1.57)i1.43 (1.07–1.92)e0.95 (0.63–1.44)0.14
Translocation
 1-Naphthol1.13 (0.87–1.47)1.16 (0.89–1.51)1.33 (0.95–1.85)i0.93 (0.60–1.45)0.24
 2-Naphthol1.28 (0.93–1.78)1.43 (1.02–1.99)e1.38 (0.96–1.98)i1.79 (0.78–4.08)0.61
 NAPH1.30 (0.92–1.84)1.42 (1.00–2.02)e1.53 (1.04–2.26)e1.24 (0.64–2.42)0.62

Abbreviation: MR, mean ratio.

  • aAOR: gender and ethnicity adjusted OR.

  • bAOR: gender adjusted OR.

  • cWald test was used for difference between ethnic groups.

  • dP < 0.06.

  • eP < 0.05.

  • fP < 0.01.

  • gMR: gender and ethnicity adjusted.

  • hMR: gender adjusted.

  • i0.05 < P < 0.10.