OBJECTIVE:

To identify the factors associated with work capacity in medical personnel of a tertiary hospital of the Mexican Institute of Social Security.

MATERIAL AND METHOD:

A comparative cross-sectional study was done in medical staff members and residents of a clinical area and another surgical area from January to December 2017. The Work Capacity Index, the Maslach Burnout Inventory, as well as labor and anthropometric factors were evaluated.

RESULTS:

In the medical staff members (n = 80), a higher BMI and personal performance was observed, but fewer hours worked, emotional exhaustion and depersonalization than in the resident physicians (n = 80). Among the resident physicians, the lower grade showed lower ICT and greater emotional exhaustion and depersonalization, but with no difference in personal fulfillment. In the multiple regression analysis, to identify the variables that best explain the Work Capacity Index, the BMI, the emotional exhaustion and the number of diseases were inversely related to quality of work, and directly the surgical category (R2 = 0.55, p < 0.0001 for the model), all adjusted to the age, be an ascribed or resident doctor and the hours worked per week.

CONCLUSIONS:

The BMI, the emotional exhaustion, the number of diseases, and belonging to the clinical category explained the 55% of the index of work capacity in the whole group of physicians.

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