Incidence of proximal femur fractures in Marilia, Brazil.
BACKGROUND



METHODS
Three general hospitals in the town of Marília that have an orthopaedic and traumatologic unit. Marília is a Municipality with 161.000 inhabitants in the middle-east of São Paulo State, Brazil.


METHODS
All inpatients, living in Marília-SP, aged 20 years or more, with a diagnosis of proximal femur fracture (WHO, International Classification of Diseases, 9th.ed., code 820), in the period of January 01, 1994 and December 31, 1995.


METHODS
The incidence rates of the proximal femur fractures in Marília-SP. Secondary Measurements: mean-age of the occurrence (male and female), in-hospital mortality, hospitalar costs to S.U.S. (Government Health System), the average length of hospital stay, seasonality, mean-interval between admission and surgical procedure, type of fracture: transcervical and pertrochanteric, content validity of S.I.H.-S.U.S data base report on proximal femur fractures, when compared with hospital registrations.


OBJECTIVE
To determine the incidence (crude, age-specific and age-adjusted) of fractures of the proximal femur in Marília-SP, Brazil, in 1994 and 1995.


METHODS
Retrospective cohort study.


RESULTS
The crude incidence rate was 4.96/10,000 inhabitants/year in 1994 and 5.51/10,000 inhabitants/year in 1995; the age-specific incidence rate increased from 0.25/10,000 inhabitants 20-49 years/year to 100.27/10,000 inhabitants 70 years or more/year in 1995 among women; the age-adjusted incidence rate was 29.48/10,000 inhabitants 60 years or more/year in 1994, and 35.83/10,000 inhabitants 60 years or more/year in 1995.


CONCLUSIONS
The crude incidence rate of the proximal femur fractures in Marília-SP, Brazil was 4.96 / 10,000 inhabitants in 1994 and 5.51/10,000 inhabitants in 1995. It was significantly greater among women (7.2/10,000 inhabitants in 1994 and 8.6/10,000 inhabitants in 1995) and among the elderly, 70 year-old or more (female: 90.21/10,000 inhabitants in 1994 and 100.27/10,000 inhabitants in 1995; male: 25.46/10,000 inhabitants in 1994 and 45.66/10,000 inhabitants in 1995).
Komatsu
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RS
Division of Geriatrics and Gerontology, FAMEMA-Marilia Medical School, Brazil.
Ramos
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LR
Szejnfeld
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VL
D000328:Adult; D000367:Age Factors; D000368:Aged; D001938:Brazil / Q000453:epidemiology; D015331:Cohort Studies; D005260:Female; D005264:Femoral Fractures / Q000453:epidemiology* / Q000209:etiology; D017048:Health Care Costs; D006801:Humans; D015994:Incidence; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000150:complications*; D012189:Retrospective Studies; D012307:Risk Factors; D012737:Sex Factors