Youth vaping and smoking and parental vaping: a panel survey

BMC Public Health

Table 4 Estimates of effects of parental vaping on youth smoking vaping

	All Youth				Ex-Smoking Parents				Current Smoking Parents
	OR	95% CI	E-Value for OR	E-Value for Lower Limit	OR	95% CI	E-Value for OR	E-Value for Lower Limit	OR	95% CI	E-Value for OR	E-Value for Lower Limit	P-Value for difference^a
Youth Ever Smoking				N = 3291				N = 1300				N = 817
Sample weighted association	1.93	1.25–2.98	3.27	1.81	2.07	0.95–4.50	3.56	1.00	1.36	0.74–2.51	2.06	1.00	0.407
ATE	2.43	1.05–5.63	4.29	1.28	1.92	0.89–4.15	3.25	1.00	1.37	0.73–2.56	2.08	1.00	0.505
ATT	1.68	1.03–2.72	2.75	1.21	1.84	0.81–4.16	3.08	1.00	1.51	0.80–2.82	2.39	1.00	0.702
Youth Current Smoking				N = 3291				N = 1300				N = 817
Sample weighted association	1.99	0.96–4.10	3.39	1.00	3.59	1.07–12.01	6.64	1.34	0.78	0.30–2.00	1.88	1.00	0.050
ATE	1.61	0.62–4.20	2.60	1.00	3.80	1.13–12.77	7.06	1.51	0.75	0.30–1.89	2.00	1.00	0.037
ATT	1.27	0.58–2.81	1.86	1.00	2.73	0.74–10.03	4.90	1.00	0.87	0.34–2.28	1.56	1.00	0.167
Youth Smoking Initiation				N = 3075				N = 1209				N = 749
Sample weighted association	3.11	0.94–10.31	5.67	1.00	10.87	2.69–43.97	21.23	4.82	1.19	0.17–8.42	1.67	1.00	0.071
ATE	3.50	0.81–15.03	6.46	1.00	11.28	2.74–46.44	22.05	4.92	1.01	0.16–6.42	1.11	1.00	0.042
ATT	3.76	1.27–11.19	6.98	1.86	6.81	1.78–25.96	13.10	2.96	2.58	0.50–13.35	4.60	1.00	0.370
Youth Vaping				N = 3291				N = 1300				N = 817
Sample weighting association	1.85	0.97–3.53	3.10	1.00	3.74	1.30–10.76	6.94	1.92	0.96	0.39–2.38	1.25	1.00	0.181
ATE	1.34	0.58–3.09	2.01	1.00	2.61	0.82–8.31	4.66	1.00	1.02	0.42–2.47	1.16	1.00	0.087
ATT	1.48	0.72–3.04	2.32	1.00	2.70	0.88–8.27	4.84	1.00	1.08	0.42–2.76	1.37	1.00	0.218

^aP-value testing equivalence of OR for ex compared to current smoking parents
ATE estimates the average effect of parental vaping among all youth (or within strata of parental smoking)
ATT estimates the average effect of parental vaping among youth whose parents do vape (or those whose parents do vape within strata of parental smoking). The e-value for the OR indicates the minimum strength of association (OR) that an unmeasured confounder would need to have with both parental vaping and youth outcomes to reduce this estimate to the null. The e-value for the lower limit indicates the minimum strength of association that an unmeasured confounder would need to have with both parental vaping and youth outcomes for the lower limit of the confidence intervals around this estimate to cross the null (all confounders are unmeasured for the sample weighted associations)

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