Corrigendum to Benzene and Childhood Acute Leukemia in Oklahoma

The authors regret that the “All Ages” columns in Tables 4 and 5 for the “Unadjusted” and “Adjusted for Maternal Education” estimates were transposed. The revised Tables 4 and 5 reflect the corrected estimates for the “All Ages” columns.

Table 4.

Analysis of benzene classified into quartiles at the census tract of the birth residence and acute leukemia by age at leukemia diagnosis/index age for controls. Estimates are presented as odds ratios (OR) and 95% confidence intervals (CI).

Age at Leukemia Diagnosis/Index Age	All Ages	0–4 years	5–9 years	10–14 years	15–19 years
Number of Children	1320	663	326	147	184
	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)
Unadjusted
0.11-<0.39 μg/m3	Referent	Referent	Referent	Referent	Referent
0.39-<0.67 μg/m3	0.98 (0.68, 1.43)	0.92 (0.54, 1.58)	0.99 (0.46, 2.14)	1.45 (0.54, 3.89)	0.81 (0.28, 2.33)
0.67-<0.91 μg/m3	1.05 (0.72, 1.51)	1.22 (0.73, 2.05)	0.69 (0.32, 1.50)	1.22 (0.39, 3.88)	1.00 (0.38, 2.62)
0.91-2.03 μg/m3	1.17 (0.81, 1.68)	1.28 (0.76, 2.17)	1.26 (0.62, 2.56)	0.79 (0.27, 2.29)	0.95 (0.36, 2.51)
Adjusted for Urbanization and Maternal Education
0.11-<0.39 μg/m3	Referent	Referent	Referent	Referent	Referent
0.39-<0.67 μg/m3	1.06 (0.71, 1.58)	1.01 (0.56, 1.81)	1.07 (0.46, 2.44)	1.66 (0.53, 5.17)	0.71 (0.23, 2.19)
0.67-<0.91 μg/m3	1.21 (0.79, 1.87)	1.41 (0.77, 2.61)	0.76 (0.31, 1.88)	1.90 (0.44, 8.12)	0.96 (0.33, 2.82)
0.91-2.03 μg/m3	1.28 (0.83, 1.97)	1.45 (0.77, 2.73)	1.36 (0.59, 3.16)	1.15 (0.31, 4.24)	0.83 (0.27, 2.60)
Adjusted for Maternal Education
0.11-<0.39 μg/m3	Referent	Referent	Referent	Referent	Referent
0.39-<0.67 μg/m3	0.97 (0.67, 1.41)	0.92 (0.54, 1.58)	0.98 (0.45, 2.11)	1.35 (0.48, 3.75)	0.71 (0.23, 2.15)
0.67-<0.91 μg/m3	1.07 (0.73, 1.55)	1.25 (0.74, 2.10)	0.67 (0.31, 1.47)	1.37 (0.38, 4.95)	0.96 (0.36, 2.56)
0.91-2.03 μg/m3	1.13 (0.78, 1.63)	1.28 (0.75, 2.17)	1.21 (0.59, 2.48)	0.86 (0.28, 2.66)	0.83 (0.30, 2.33)

Table 5.

Analysis of benzene classified into quartiles at the census tract of the birth residence and acute leukemia by year of birth. Estimates are presented as odds ratios (OR) and 95% confidence intervals (CI). Statistically significant estimates are indicated in bold.

Year of Birth	All Years	1979–1989	1990–1994	1995–1999	2000–2004	2005–2010
Number of Children	1320	136	187	283	457	257
	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)	OR (95% CI)
Unadjusted
0.11-<0.39 μg/m3	Reference	Reference	Reference	Reference	Reference	Reference
0.39-<0.67 μg/m3	0.98 (0.68, 1.43)	0.70 (0.22, 2.24)	1.03 (0.38, 2.81)	0.80 (0.36, 1.76)	1.16 (0.63, 2.15)	1.37 (0.48, 3.91)
0.67-<0.91 μg/m3	1.05 (0.72, 1.51)	0.87 (0.29, 2.55)	0.83 (0.28, 2.45)	0.74 (0.36, 1.52)	0.87 (0.45, 1.68)	3.15 (1.22, 8.13)
0.91-2.03 μg/m3	1.17 (0.81, 1.68)	0.62 (0.20, 1.90)	1.30 (0.51, 3.29)	0.75 (0.35, 1.60)	1.11 (0.59, 2.07)	3.53 (1.35, 9.27)
Adjusted for Urbanization and Maternal Education
0.11-<0.39 μg/m3	Reference	Reference	Reference	Reference	Reference	Reference
0.39-<0.67 μg/m3	1.06 (0.71, 1.58)	0.53 (0.16, 1.79)	1.70 (0.54, 5.28)	0.80 (0.34, 1.86)	1.15 (0.59, 2.25)	2.22 (0.67, 7.39)
0.67-<0.91 μg/m3	1.21 (0.79, 1.87)	0.63 (0.17, 2.32)	2.16 (0.58, 8.09)	0.77 (0.34, 1.75)	0.87 (0.40, 1.88)	5.70 (1.69, 19.26)
0.91-2.03 μg/m3	1.28 (0.83, 1.97)	0.39 (0.10, 1.56)	3.17 (0.96, 10.49)	0.70 (0.30, 1.65)	1.03 (0.49, 2.17)	6.73 (1.86, 24.40)
Adjusted for Maternal Education
0.11-<0.39 μg/m3	Reference	Reference	Reference	Reference	Reference	Reference
0.39-<0.67 μg/m3	0.97 (0.67, 1.41)	0.59 (0.18, 1.91)	1.12 (0.40, 3.17)	0.78 (0.35, 1.75)	1.18 (0.63, 2.19)	1.40 (0.49, 4.01)
0.67-<0.91 μg/m3	1.07 (0.73, 1.55)	0.80 (0.26, 2.50)	1.08 (0.34, 3.48)	0.75 (0.36, 1.57)	0.90 (0.46, 1.75)	3.22 (1.24, 8.39)
0.91-2.03 μg/m3	1.13 (0.78, 1.63)	0.50 (0.15, 1.69)	1.44 (0.54, 3.89)	0.68 (0.31, 1.50)	1.07 (0.56, 2.02)	3.60 (1.35, 9.55)

The authors would like to apologise for any inconvenience caused.