Table 3 Predictors of DNA Yield (log_e transformed) in mothers
HB (N = 446) | Infant leukemia (N = 489) | Combined (N = 935) | |||||||
|---|---|---|---|---|---|---|---|---|---|
βa | % changeb | Pvalue | βa | % changeb | Pvalue | βa | % changeb | Pvalue | |
Age at DNA collection (years) | |||||||||
< 30 years | Reference | Reference | Reference | Reference | Reference | Reference | |||
30 – 35 years | 0.06 (−0.35-0.47) | 6.2 | 0.78 | −0.25 (−0.67-0.16) | −22 | 0.23 | −0.11 (−0.41-0.18) | −10 | 0.45 |
35 – 40 years | −0.16 (−0.56-0.24) | −15 | 0.43 | 0.04 (−0.39-0.46) | 4.1 | 0.86 | −0.09 (−0.38-0.21) | −8.6 | 0.57 |
> 40 years | −0.21 (−0.62-0.21) | −19 | 0.33 | −0.47 (−0.93- -0.01) | −37 | 0.04 | −0.37 (−0.68- -0.05) | −31 | 0.02 |
Study | |||||||||
HB | NA | NA | NA | NA | NA | NA | Reference | Reference | |
Infant leukemia | NA | NA | NA | NA | NA | NA | 0.05 (−0.15-0.26) | 5.1 | 0.63 |
Case control status | |||||||||
Control | Reference | Reference | Reference | Reference | Reference | Reference | |||
Case | −0.13 (−0.41-0.16) | −12 | 0.38 | 0.41 (0.09-0.72) | 51 | 0.01 | 0.14 (−0.08-0.36) | 15 | 0.21 |
Maternal race | |||||||||
White | Reference | Reference | Reference | Reference | Reference | Reference | |||
Other | 0.10 (−0.23-0.44) | 11 | 0.54 | 0.13 (−0.27-0.53) | 14 | 0.53 | 0.13 (−0.14-0.39) | 14 | 0.34 |
Season of DNA collection | |||||||||
Spring | Reference | Reference | Reference | Reference | Reference | Reference | |||
Summer | 0 (−0.37-0.37) | 0 | 1.00 | 0.30 (−0.12-0.73) | 35 | 0.16 | 0.18 (−0.10-0.46) | 20 | 0.20 |
Fall | −0.19 (−0.57-0.20) | −18 | 0.35 | 0.82 (0.43-1.21) | 127 | <0.0001 | 0.39 (0.11-0.66) | 48 | 0.007 |
Winter | 0.25 (−0.15-0.65) | 28 | 0.22 | 0.46 (0.04-0.87) | 58 | 0.03 | 0.35 (0.06-0.64) | 42 | 0.02 |