Table 2.

Standard model of logistic regression presenting the probability of migraine prevalence in adults.

Effect	Nagelkerke R2 = 0.11
	Coefficient	Standard error	Wald value	OR	95% CI for OR	p
Mother’s education level: Master’s course graduates1	−0.210	0.210	0.999	0.64	0.30–1.37	0.317
Mother’s education level: Secondary education or Bachelor’s course graduates1	−0.024	0.175	0.018	0.77	0.40–1.48	0.892
Father’s education level: Master’s course graduates1	0.361	0.213	2.867	1.60	0.75–3.42	0.090
Father’s education level: Secondary education or Bachelor’s course graduates1	−0.251	0.180	1.948	0.87	0.45–1.67	0.163
Maternal smoking (MSDP): yes2	0.632	0.313	4.091	3.62	1.52–8.64	0.043
Maternal smoking (MSDP): do not know2	0.023	0.320	0.005	1.97	0.80–4.84	0.943
Maternal passive smoking (MPSDP): yes2	0.039	0.221	0.032	1.44	0.91–2.27	0.859
Maternal passive smoking (MPSDP): do not know2	0.286	0.381	0.564	1.84	0.59–5.80	0.453
Alcohol consumption: yes2	0.555	0.507	1.199	1.78	0.41–7.74	0.274
Alcohol consumption: do not know2	−0.533	0.369	2.084	0.60	0.25–1.44	0.149
Traumatic event: yes2	0.473	0.216	4.803	2.12	1.15–3.90	0.028
Traumatic event: do not know2	−0.196	0.219	0.797	1.09	0.58–2.03	0.372

¹vs primary or vocational education.

²vs no.

OR, odds ratio; p, probability; Wald test was used to check regression variables’ relevance.