Table 1 Exposure variables and their categories of analysis

 Age (continuous variable)

0 = up to 40 years

1 = more than 40 years

 Race/skin color

0 = white

1 = non-white (yellow, brown, indigenous, black)

 Marital status

0 = with partner (consensual union/stable union, married)

1 = no partner (single, divorced/separated/widowed)

 Presence of children

0 = no

1 = yes

 Practice of leisure activities

0 = yes

1 = no

 Physical activity practice

0 = yes (1 to 2 times a week, 3 or more times a week)

1 = no (never)

 Use of alcoholic beverages

0 = no

1 = yes

 Smoking

0 = non-smoker (non-smoker, former smoker)

1 = current smoker

 Professional category (open question)

0 = nurse

1 = nursing assistant/technician

 Working time (continuous variable)

0 = less than 5 year

1 = 5 to 10 years

2 = more than 10 years

 Working time at the unit (continuous variable)

0 = less than 5 year

1 = 5 to 10 years

2 = more than 10 years

 Employment bond

0 = full employment (municipal with public service exam-of the permanent staff contracted by CLT)

1 = precarious work (municipality or assigned worker to the state or federal government; service provider; cooperative worker; trustee position; outsourced; trainee)

 Having another employment bond

0 = no (I have no other work)

Yes, at the municipality; yes, at the state; yes, I have another job in the private sector with a formal contract; yes, I have another job on my own; yes, in another municipality; yes, I have another job in the private sector without a formal contract)

 Having labor rights (do you have the right to the 13th salary, holidays, vacations, and the additional holiday wages)

0 = yes, all (they had all the labor rights)

1 = yes, partially (they had 1 to 3 of the rights)

2 = no (they had none of the labor rights)

 Weekly working week (continuous variable)

0 = up to 40 h

1 = between 41 and 60 h

2 = more than 60 h

 Work shift

0 = daytime (morning, afternoon, morning, and afternoon)

1 = night work/work in shifts

 Physical demand on the work

0 = low physical demand (lower than the average sum)

1 = high physical demand (higher than the average sum)

 Compatibility of the developed activities

0 = compatible with the position (yes, totally; yes, most of the time)

1 = not compatible with the position (yes, most of the time; almost never; never)

 Personal safety threatened at work

0 = no

1 = yes

 Domestic work

0 = no

1 = yes

 Household overload: sum of basic household tasks (washing, ironing, cleaning, cooking), evaluated by the number of dwellers, by the formula: HO = (washing + ironing + cleaning + cooking) × (M − 1) (Aquino, 1996), categorized as tertiles: high, medium, and low overload, as used by Pinho and Araújo (2012) and then dichotomized.

0 = low/medium overload

1 = high overload

 Social support

-High support (higher than average)

-Low support (below average)

 Control demand model: construction of four categories of work, from the combination of the dimensions psychological demand and control over work (JCQ guide).

0 = low demand (high control and low demand)

1 = active work (high control and high demand)

2 = passive work (low control and low demand)

3 = high demand (low control and high demand)

 Reward-effort model (ERI): formula ER = effort/(reward ×  0.5454) (correction factor).

0 = balance (result of function < 1)

1 = imbalance (result of function ≥1)

 Satisfaction with working ability

0 = satisfied (satisfied; very satisfied)

1 = dissatisfied (very dissatisfied; dissatisfied; neither dissatisfied nor satisfied)

 Work satisfaction

0 = satisfied (I am satisfied, I am very satisfied)

1 = unsatisfied (I am not satisfied at all; I’m not satisfied)

 Satisfaction with salary/income (question “Taking into account all my efforts and achievements, is my salary/income adequate”)

0 = satisfied (agree and strongly agree)

1 = dissatisfied (disagree, strongly disagree)

 Satisfaction with personal relationships

0 = satisfied (satisfied; very satisfied)

1 = dissatisfied (very dissatisfied; dissatisfied; neither dissatisfied nor satisfied)

 Satisfaction with oneself

0 = satisfied (satisfied; very satisfied)

1 = dissatisfied (very dissatisfied; dissatisfied; neither dissatisfied nor satisfied)

 Quality of life assessment

0 = Good (good; very good)

1 = Poor (very poor; poor, neither poor nor good)

 Occupational or occupational diseases

-No

-Yes

 Accidents at work

-No

-Yes

 Medical license

-No

-Yes

 Presence of comorbidity: sum of 26 variables related to diseases diagnosed by a physician, all with two response categories (1 = yes, 0 = no)

-No (absence of comorbidity)

-Yes (presence of comorbidities for any positive response)

 Presence of musculoskeletal pain: sum of the variables related to this dimension: pain in the legs, pain in the arms, pain in the upper back, and pain in the lower part of the back, all with five categories of responses (0 = never, 1 = rarely, 2 = infrequent, 3 = frequent and 4 = very frequent). Initially, these variables were dichotomized in no (0) for “never” and “rarely” and in yes (1) for the other categories, then being summed.

0 = no (all negative responses)

1 = yes (any positive response)

 Self-assessment of health status

0 = positive (very good/good)

1 = negative (regular/poor/very poor)