Table 2 Summary statistics of the variables

Ave. consumption

396.49

223.645

Square meters area

105.429

52.416

Dwelling factor

Occupants

3.062

1.143

Socio-economic factor

Family type: family with older children^a

0.220

0.414

Socio-economic factor

Family type: family with young children^a

0.443

0.497

Socio-economic factor

Family type: older people

0.091

0.287

Socio-economic factor

Age

2.592

0.828

1: “19–29”, 2: “30–39”, 3: “40–55”, 4: “56–67”, 5: “68+”.

Socio-economic factor

Gender: male^a

0.819

0.385

Socio-economic factor

Marital status: married^a

0.778

0.416

Socio-economic factor

Marital status: single^a

0.171

0.377

Socio-economic factor

Marital status: widowed^a

0.008

0.091

Socio-economic factor

Occupants’ work

1.532

0.702

Socio-economic factor

Income

2.253

0.857

1: Low-income (less than 10,000€), 2: Lower-middle (11,000€–20,000€ ), 3: Upper-middle (21,000€–40,000€), 4: High-income (more than 41,000€)

Socio-economic factor

Educational level

2.835

0.831

1: “No diploma”, 2: “High school diploma or equivalent”, 3: “Bachelor or equivalent”, 4: “Master or equivalent”, 5: “Doctoral or equivalent”

Socio-economic factor

House status: own^a

0.721

0.449

Dwelling factor

Dwelling type: block of flats^a

0.710

0.454

Dwelling factor

Dwelling type: single family house^a

0.290

0.454

Dwelling factor

Dwelling floor

2.189

0.813

1: “1–2”, 2: “3–4”, 3: “5–6”, 4: “7–8”

Dwelling factor

Rooms

2.149

0.635

1: “1–2”, 2: “3–4”, 3: “5 or more”

Dwelling factor

Bedrooms

1.919

0.416

1: “1”, 2: “2–3”, 3: “4 or more”

Dwelling factor

Time spend

2.212

0.548

1: “Less than half-day”, 2: “Half-day or more”, 3: “All day”

Socio-economic factor

Lights: often^a

0.043

0.202

Dwelling factor

Lights: sometimes^a

0.400

0.490

Dwelling factor

Heating type: individual central boiler^a

0.503

0.500

Dwelling factor

Heating type: individual local units^a

0.284

0.451

Dwelling factor

Heating type: no heating^a

0.053

0.224

Dwelling factor

Secondary heater: yes^a

0.722

0.448

Dwelling factor

Heating hours

2.351

0.911

1:“0–2 h”, 2:“2–5 h”, 3:“5–10 h”, 4:“10 h or more”

Dwelling factor

Cooling type: have air-conditioning^a

0.870

0.336

Dwelling factor

Cooling hours^a

1.809

0.832

1:“0–2 h”, 2: “2–5 h”, 3: “5–10 h”, 4:“10 h or more”

Dwelling factor

Summer holidays: I don’t take summer holid.^a

0.154

0.361

Socio-economic factor

Summer holidays: July/August^a

0.668

0.471

Socio-economic factor

Summer holidays: June/September^a

0.087

0.281

Socio-economic factor

Winter holidays: Christmas^a

0.234

0.424

Socio-economic factor

Winter holidays: Easter^a

0.082

0.275

Socio-economic factor

Winter holidays: I don’t take winter holid.^a

0.527

0.499

Socio-economic factor

CDD (1000)

1.233

0.233

Weather factor

HDD (1000)

1.113

0.397

Weather factor