Spread and establishment of Aedes albopictus in southern Switzerland between 2003 and 2014: an analysis of oviposition data and weather conditions

Table 1 Result summary for the negative binomial model for the relationship between egg counts, year, month and precipitation for the years 2006 to 2014

Predictor	Coefficient β (log₂)	SE(β) (log₂)	Z-value	P-value
Intercept	-5.81	0.596	-9.75	< 0.001
2007	1.278	0.374	3.42	< 0.001
2008	0.292	0.36	0.81	ns
2009	1.88	0.341	5.51	< 0.001
2010	2.609	0.369	7.08	< 0.001
2011	2.801	0.345	8.13	< 0.001
2012	4.383	0.355	12.36	< 0.001
2013	3.935	0.366	10.75	< 0.001
2014	4.471	0.358	12.47	< 0.001
June	2.745	0.467	5.88	< 0.001
July	4.402	0.468	9.4	< 0.001
August	5.125	0.464	11.03	< 0.001
September	5.1	0.471	10.83	< 0.001
Rain “middle”	-1.131	0.283	-4	< 0.001
Rain “high”	-2.406	0.906	-2.65	< 0.01

Negative binomial dispersion parameter α = 0.10125 (SE = 0.0047812). ns: not significant

ISSN: 1756-3305