Table 4 Factor analysis: rotated component matrix to factor identification

Age

− 0.036

0.082

− 0.036

− 0.025

0.019

0.184

− 0.058

− 0.774

− 0.134

0.15

Family size

− 0.039

0.053

0.011

0.028

0.352

− 0.428

0.059

0.16

0.382

− 0.029

Education

0.04

− 0.054

0.056

− 0.055

0.035

− 0.005

0.042

0.639

0.061

0.395

Income

− 0.039

− 0.017

0.003

− 0.032

0.058

− 0.012

− 0.142

0.05

− 0.068

0.869

SPG attendance time

− 0.046

0.052

0.12

− 0.044

0.707

0.075

0.15

− 0.242

− 0.095

0.088

Role inside SPG

0.004

0.005

0.008

0.167

0.75

0.078

− 0.044

0.055

− 0.132

0.05

Percentage of food expenditure from SPG

0.15

0.053

− 0.079

0.259

0.597

0.169

− 0.191

0.203

0.002

− 0.083

Interest in the ethical content of food

− 0.064

0.184

0.174

0.159

0.329

0.475

− 0.122

0.072

0.076

− 0.071

Importance of regional origin

0.113

0.164

0.890

0.059

0.045

0.06

− 0.012

− 0.003

− 0.01

0.048

Importance of municipal origin

0.034

0.1

0.894

0.065

0.041

0.108

0.008

− 0.024

0.028

0.03

Importance of supplying from small producers

0.018

0.006

0.420

0.177

0.06

0.563

− 0.056

− 0.023

0.053

− 0.098

Importance of production process information

0.603

0.344

0.271

0.012

0.133

0.136

0.074

0.08

− 0.075

0.078

Importance of nutrition/ingredients information

0.653

0.268

0.23

− 0.022

− 0.025

0.109

0.084

0.16

− 0.038

0.06

Influence the price during purchase of food products

− 0.029

0.061

− 0.009

− 0.016

0.08

− 0.047

0.725

0.059

0.123

− 0.271

Frequency in comparing the prices of similar products

0.007

− 0.02

0.006

− 0.034

0.022

0.064

0.820

0.144

− 0.056

− 0.045

Importance to have a wide range of similar products during purchase of food products

− 0.025

0.013

0.005

0.171

− 0.23

0.001

0.613

− 0.242

0.274

0.228

Importance of purchasing seasonal foods

0.146

0.041

0.141

0.149

0.048

0.605

0.141

− 0.006

0.078

0.089

Importance to save time for food supply

0.036

0.021

− 0.037

− 0.123

− 0.065

0.007

0.092

0.006

0.776

− 0.027

E-commerce utility for buying food

− 0.055

0.033

0.054

0.037

− 0.11

0.173

0.042

0.069

0.728

− 0.037

Importance of a low-impact packaging during purchases

0.002

0.384

0.015

0.025

0.173

0.539

0.001

0.01

0.064

− 0.022

Awareness about water consumption with reference to agro-food production

0.181

0.867

0.208

0.075

0.065

0.17

0.005

− 0.006

0.051

− 0.012

Awareness about carbon emissions with reference to agro-food production

0.212

0.874

0.195

0.078

0.071

0.149

0.027

− 0.015

0.079

0.022

Awareness about energy consumption with reference to agro-food production

0.212

0.882

0.232

0.054

0.094

0.106

0.045

− 0.017

0.078

0.011

Awareness about use of pesticides with reference to agro-food production

0.606

0.520

0.206

0.05

0.081

0.064

0.018

− 0.018

− 0.04

0.047

Awareness about Km0 products with reference to agro-food production

0.271

0.426

0.557

0.034

0.001

0.112

0.065

0.028

0.047

0.067

Pleasure during grocery shopping

0.016

− 0.013

0.011

0.799

− 0.077

0.065

0.083

0.081

− 0.048

− 0.019

Purchase act as a socialization situation

− 0.007

0.041

0.103

0.832

0.236

0.132

− 0.022

0.023

− 0.008

0.018

Importance of sharing food choices

0.033

0.062

0.107

0.783

0.256

0.146

− 0.036

− 0.029

− 0.015

− 0.024

Importance that a food product is preservative-free

0.784

0.221

0.151

0.087

0.013

0.145

− 0.046

− 0.029

0.015

0.041

Importance that a food product is organic

0.738

0.241

0.097

0.09

0.078

0.08

− 0.078

− 0.046

0.045

0.089

Importance that a food product is fresh

0.774

0.225

0.206

0.044

0.028

0.101

− 0.013

0.019

0.04

0.133

Importance that a food product is typical of Italian tradition

0.458

0.071

0.319

0.213

− 0.047

− 0.05

0.02

− 0.367

0.183

0.189

Importance that a food product is GMO-free

0.728

0.226

0.176

0.075

0.075

0.124

− 0.029

0.02

0.026

− 0.091

Importance of knowing and trusting in producers

0.153

0.086

− 0.06

0.259

0.257

0.485

− 0.021

− 0.08

0.138

0.059

Propensity to buy new or unknown food products

0.006

0.184

− 0.089

0.281

− 0.04

0.23

0.025

0.434

− 0.074

0.08