Table 2.

Univariate analysis of the explanatory variables considered in the analysis.

	Value levels	OR	[95% CI] [Lower – Upper]	p
Demographic characteristics:
Sex	Men	1.130	[.960–1.320]	.141a
	Women	base
Age	13–49 years old	1.296	[1.015 – 1.655]	.037a
	50–65 years old	base
Education level	Elementary School	base
	High School	.970	[.725–1.299]	.838
	Undergraduate	1.033	[.749–1.449]	.843
	Postgraduate	1.081	[.710–1.645]	.716
Occupation	Students	base
	P&P Employee	1.051	[.877–1.259]	.593
	ESE Employee	1.042	[.749–1.449]	.808
	Other (Jubilee, etc.)	1.209	[.936–1.560]	.146a
Location	CDMX	base
	EDOMX	1.039	[.874–1.236]	.655
Earthquake experience:
1985 earthquake experience	Yes	1.038	[.870–1.239]	.681
	No	base
Drills:
Drill past participation	Yes	1.253	[.918–1.710]	.155a
	No	base
Frequency of drills				.000a
	0 per year	base
	1 per year	1.623	[1.017 – 2.589]	.042
	2 per year	.783	[.474–1.293]	.339
	3 per year	1.289	[.654–2.542]	.463
	4 per year	.522	[.295 - .926]	.026
	6 per year	.755	[.493–1.157]	.197
	12 per year	.780	[.513–1.184]	.243
The SAMEX:
Knowledge warning time	Time varies	1.243	[1.024 – 1.509]	.028a
	Other	base
Usefulness SASMEX	Yes	base
	No	1.208	[.960–1.520]	.108a
Perception of seismic risk:
Likelihood of harm	Scale	.966	[.961–1.032]	.818
Severity of harm	Scale	1.006	[.969–1.045]	.748
Perception vulnerability city	(α = .67)	1.070	[.973–1.177]	.165a
Earthquake knowledge:
Knowledge what to do	Yes	.930	[.765–1.130]	.324
	No	base
Knowledge vs drills	Yes	1.454	[1.230 – 1.719]	.000a
	No	base
Current knowledge	Scale	.969	[.930–1.009]	.128a
Psychological reactions:
Negative emotions	(α = .75)	.973	[.888–1.065]	.551
Fear 07 September	Scale	.990	[.964–1.016]	.448
Fear on earthquake 19 sept.	High	base
	Low	1.124	[.937–1.347]	.208a

^aThe selected variables at significance criterion p < .25 [[36], [37], [38], [39]].