Table 3.

Comparison of the numbers of patients admitted to the emergency unit in months in which fuel was used and not used according to years

	2006–2007		2008–2009
	COPD mean±SD	Asthma mean±SD	COPD mean±SD	Asthma mean±SD
Months in which solid fuel (+natural gas) was used	13.08±7.40a	2.16±1.89b	12.33±5.08a	3.66±3.14b
Months in which solid fuel (+natural gas) was not used	5.66±2.67	1.33±1.07	4.66±3.77	1.00±1.41
p value	0.001	0.001	0.05	0.05

One-factor variance analysis was performed. According to months in which fuel was not used;

^ap<0.05 for COPD,

^bp<0.05 for asthma