Abstract
This study aimed to compare data and associated diseases between women and men with gout paired for age and duration of the disease. Consecutive patients from outpatient gout clinics of 2 rheumatology departments were included in this case-control study. We identified 37 women with gout diagnosis and paired them by age and duration of the disease with 37 men with gout (American College of Rheumatology criteria). Variables were clinical data, associated diseases, and renal function evaluated by 3 methods: creatinine clearance, modification of diet in renal disease, and Cockcroft-Gault. Mean (SD) age was 54.47 (15.13) years in women versus 53.52 (15.23) years in males, and mean (SD) age at onset 46.77 (16.63) years versus 45.62 (16.16) years in women and men, respectively. Hypertension was found in 26 (73%) of 37 women and in 27 (70%) of 37 men, previous diuretics was found in only 1 man, and no significant differences were found between women and men in gout or associated metabolic diseases. Females had lower creatinine clearance than males did (49.8 [29.7] vs. 67.1 [35.5] mL/min, P = 0.039). But, when it was calculated by methods considering sex, there were no significant differences (Cockcroft-Gault 66.4 [37.6] vs. 78.8 [43.8] mL/min [P = 0.2] and modification of diet in renal disease 73.8 [64.6] vs. 73.1 [35.0] mL/min [P = 0.9], females vs. males, respectively). Thirteen women (35%) were premenopausal at onset, 2 had familial history of gout, and 2 had history of lithiasis; other variables were not different from postmenopausal women. Factors previously associated to female gout seem to be more related to age than to sex or to the disease itself. In our country, patients with gout (males and females) are younger at onset. Gender should be considered to evaluate renal function in females with gout. One third of our female patients with gout were premenopausal and had unexpected higher frequency of lithiasis; no other differences with postmenopausal women were found.
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