Table 2. Logistic regression analyses parenting at T1 (i.e., frequency of communication, quality of communication and house rules) predicting smoking onset at T5 and the moderating role of DRD2, DRD4 and DAT1 genotypes.
| Frequency of communication | Quality of communication | House rules | |||||||
| DRD2 | DRD4 | DAT1 | DRD2 | DRD4 | DAT1 | DRD2 | DRD4 | DAT1 | |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Step 1 | |||||||||
| Age | .91 (.73–1.13) | .93 (.75–1.15) | .91 (.73–1.13) | .91 (.73–1.13) | .93 (.75–1.15) | .91 (.73–1.13) | .91 (.73–1.13) | .92 (.74–1.15) | .90 (.73–1.13) |
| Gender | .72 (.45–1.15) | .70 (.44–1.12) | .73 (.46–1.17) | .72 (.45–1.15) | .70 (.44–1.12) | .73 (.46–1.17) | .72 (.46–1.15) | .70 (.44–1.12) | .73 (.46–1.17) |
| Education | .91 (.70–1.18) | .90 (.69–1.17) | .91 (.70–1.18) | .91 (.70–1.18) | .90 (.69–1.17) | .91 (.70–1.18) | .93 (.71–1.22) | .92 (.70–1.20) | .93 (.71–1.22) |
| Maternal smoking T1 | 1.04 (.86–1.25) | 1.02 (.85–1.23) | 1.01 (.84–1.22) | 1.04 (.86–1.25) | 1.02 (.85–1.23) | 1.01 (.84–1.22) | 1.04 (.86–1.25) | 1.02 (.65–1.23) | 1.01(.84–1.21) |
| Paternal smoking T1 | 1.10 (.92–1.32) | 1.09 (.91–1.31) | 1.13 (.94–1.36) | 1.10 (.92–1.32) | 1.09 (.91–1.31) | 1.13 (.94–1.36) | 1.10 (.92–1.31) | 1.09 (.91–1.31) | 1.13 (.94–1.36) |
| Step 2 | |||||||||
| Parenting T11 | 1.11 (.78–1.57) | 1.07 (.75–1.52) | 1.11 (.78–1.57) | .62* (41–.95) | .60* (.39–92) | .64* (.42–.99) | 1.14 (.89–1.47) | 1.21 (.87–1.45) | 1.19 (.91–1.55) |
| Genotype2 | .73 (.44–1.22) | 1.35 (.84–2.17) | .99 (.61–1.60) | .74 (.44–1.23) | 1.47 (.91–2.39) | 1.01 (.63–1.63) | .74 (.44–1.23) | 1.34 (.84–2.16) | 1.08(.67–1.75) |
| Step 3 | |||||||||
| Genotype* parenting T1 | .60 (.28–1.30) | .61 (.30–1.27) | .97 (.47–2.00) | .83 (.35–1.96) | 1.50 (.64–3.47) | .70 (.31–1.60) | .79 (.48–1.30) | 1.06 (.66–1.71) | .87 (.54–1.40) |
Note. gender: 1 = boy, 2 = girl; OR = Odds Ratio; 95% CI = 95% Confidence Interval;
*
p<.05,
**
p<.01,
***
p<.001.
1
please note that columns 1–3 refer to the predictor frequency of communication, columns 4–6 refer to quality of communication and 7–9 refer to house rules.
2
columns 1, 4, 7 refer to DRD2 genotype, 2, 5, 8 refer to DRD4 genotype and 3, 6, 9 refer to DAT1 genotype.