Table 3 Indicators considered for evaluating risk. Note that the categorical values are qualitative weights of each aspect, increasing according to their role determining risk

Handler age

>70 years

1

60 to 70 years

2

40 to 59 years

3

20 to 39 years

4

Education

Technical level

1

Secondary

2

Primary

3

None

4

Migration

No

1

Yes

2

Knowledge transmission

Family/relative

1

Employer

2

Productivity

0

1

1–49

2

50–99

3

100–299

4

300–599

5

>600

6

Perception of risk

No difference

1

Medium positive

2

Medium

3

Medium negative

4

Critic

5

Critic negative

6

Belonging to an organization

Yes

1

No

2

Mescal market demand

Null

1

Low

2

Intermediate

3

High

4

Price

High

1

Low

2

Uses

One use

1

Two uses

2

Three uses

3

Four uses

4

Five uses

5

Harmful practices

None

1

Medium

2

High

3