Skip to main content
. Author manuscript; available in PMC: 2021 Dec 1.
Published in final edited form as: Psychol Addict Behav. 2020 Jan 9;34(8):839–851. doi: 10.1037/adb0000546

Table 2.

Tests of Differences Between Generations in ATM Use Onset Trends

Substance Fathers versus Boys Fathers versus Girls
Estimate(df), p value Estimate(df), p value
Tobacco onset 44.92(5), p < .001 80.11(5), p < .001
Alcohol onset 14.80(4), p = .055 56.94(4), p = .001
Marijuana onset 8.07(4), p = .089 7.15(4), p = .128

Note: df = degrees of freedom. Tabled estimates denote Wald statistics, assessing the change in overall model fit for a null model that assumed equal, to an alternative model that assumed unequal, onset rates across generations.