Table 3.
Demographic data of AMT operators
| Variable | n | % | Variable | n | % |
|---|---|---|---|---|---|
| Age | Time in the company | ||||
| <20 | 2 | 2 | <1 | 13 | 11 |
| 21-30 | 77 | 71 | 1-3 | 32 | 28 |
| 31-40 | 25 | 23 | 3-6 | 53 | 46 |
| 41-50 | 4 | 4 | 6-9 | 3 | 3 |
| >51 | 1 | 1 | >20 | 15 | 13 |
| Height (cm) | Time | ||||
| <160 | 5 | 4 | <1 | 24 | 24 |
| 160-165 | 36 | 32 | 1-3 | 30 | 30 |
| 166-170 | 33 | 28 | 3-6 | 40 | 40 |
| 171-175 | 20 | 17 | 6-9 | 1 | 1 |
| 176-180 | 14 | 12 | >20 | 4 | 4 |
| >180 | 8 | 7 | |||
| Position | |||||
| Weight (Kg) | Operator | 116 | 95 | ||
| <60 | 11 | 9 | Grupolider/operator | 6 | 5 |
| 61-70 | 31 | 26 | |||
| 71-80 | 37 | 31 | Marital status | ||
| 81-90 | 23 | 19 | Single | 29 | 27 |
| 91-100 | 13 | 11 | Married | 78 | 73 |
| >100 | 3 | 3 | Divorsed o separated | 0 | 0 |
| Number of dependents | Hours of sleep per night | ||||
| 0 | 14 | 13 | <5 | 3 | 3 |
| 1-2 | 55 | 49 | 5-6 | 37 | 33 |
| 3-4 | 36 | 32 | 6-7 | 39 | 35 |
| >5 | 7 | 6 | 7-8 | 24 | 22 |
| 8-9 | 6 | 5 | |||
| >9 | 2 | 2 | |||
| Highest educational degree | |||||
| Elementary | 0 | 0 | |||
| Secondary | 9 | 7.6 | |||
| Preparatory | 43 | 36.7 | |||
| Technical | 65 | 55.5 |