. 2020 Jun 3;89:104811. doi: 10.1016/j.eneco.2020.104811

Table 2.

Summary statistics.

Variables	Mean	S.D.	Min	Max	Mean of solid fuel users (A)	Observations	Mean of non-solid fuel users (B)	Observations	Difference (B-A)
Health variables
ADL	11.99	2.442	0	13	11.92	6226	12.05	6771	0.130^a
IADL	4.503	1.069	0	5	4.385	6226	4.611	6771	0.226^a

Control variables
AGE	60.70	9.958	45	102	62.20	6104	59.31	6651	−2.888^a
MALE	0.468	0.499	0	1	0.465	6226	0.470	6771	0.005
EDUPRIMARY	0.749	0.433	0	1	0.802	5975	0.700	6374	−0.101^a
EDUJUNIOR	0.190	0.392	0	1	0.153	5975	0.225	6374	0.072^a
EDUSENIOR	0.0610	0.239	0	1	0.046	5975	0.075	6374	0.029^a
MARRIED	0.862	0.345	0	1	0.849	6226	0.874	6771	0.025^a
FARM	0.580	0.494	0	1	0.670	6220	0.498	6759	−0.172^a
OFFFARM	0.257	0.437	0	1	0.168	6218	0.338	6759	0.170^a
SMOKING	0.973	0.162	0	1	0.972	6224	0.974	6761	0.002
DRINKING	0.339	0.473	0	1	0.328	6222	0.348	6754	0.020^b
HHSIZE	2.573	1.198	1	12	2.469	6225	2.669	6769	0.200^a
FRATIO	0.506	0.194	0	1	0.507	6226	0.506	6771	−0.001
CHILDNUM	2.728	1.508	0	15	2.913	6226	2.557	6771	−0.355^a
ASSETS	1.796	12.98	0	573.2	0.726	6226	2.780	6771	2.053^a
STRUCTURE	0.813	0.390	0	1	0.714	6220	0.903	6752	0.189^a
FUEL_OTHER	0.542	0.293	0	1	0.367	6226	0.703	6771	0.337^a

Notes: Authors' computation. A standard t-test is performed to compare the mean difference between two groups.

Significant at the 1% level;

Significant at the 5% level.