Evaluation of semen parameters in semen donors in a ten-year period in the city of São Paulo showed that the sperm concentration (R 2 = 19.1%, R 2 = 20.2%, p < 0.0001 respectively) and the oval morphology (R 2 = 13%; R 2 = 13.5%; p < 0.0001, respectively) decreased significantly, even when the first or the second sperm collection is considered. The ejaculated volume showed slight increase during the period for both samples (R 2 = 2.2%, p = 0.048; R-sq = 2.4%. p = 0.038, respectively). All characteristics did not depend on the donors' age or season of the year when the samples were obtained. conclusions: There was a decrease in spermatic concentration and percentage of oval sperm of semen donors samples from 1992 to 2003, in the city of São Paulo.

Most children with LUTD presented a previous UTI, and daily incontinence was verified in around 75% of the patients. Complaints of polaciuria or infrequent micturition are not noted completely in the micturition diaries and there is no parameter in the clinical history that offers good sensitivity or specificity for the diagnosis of lack of perineal coordination.

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