Table 5.

Multiple regression analysis of "Reduce use of air conditioner".

Explanatory variable	Coefficient	T value	Significant probability	VIF(Variance Inflation Factor)
Difficult to sleep	.281	3.279	.001	1.922
Due to the obstruction of ventilation	.200	3.015	.003	1.152
I think it is a serious situation	.142	1.975	.050	1.349
My house has good ventilation	.139	2.145	.033	1.106
It is difficult not to use it while others are using it	-.129	−1.911	.058	1.190
We should promote “cool share”	.216	3.279	.001	1.141
I use air conditioning more frequently	-.195	−2.513	.013	1.583
Many opportunities to use public facilities	.180	2.719	.007	1.146
It is difficult to go out during the day	-.193	−2.256	.025	1.919
Gender	-.212	−3.217	.002	1.134

Adjusted R²＝0.872 objective variable: Reduce use of air conditioner.