Laura Attinia Zonta

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BACKGROUND In the wide-ranging debate about the potential monitors of population fertility, twinning rate has been considered a candidate. In the developed countries, a decline in spontaneous twinning rate began around 1950 and continued until the late 1970s. The decrease in mean maternal age at delivery and the number of children per family have been(More)
An analysis of the genetic factors in obesity has been carried out on a sample of nuclear families from Aosta (N. Italy). The families consisted of the parents and sibs of all elementary school children considered to be obese during a preliminary screening and a similar sample of non-obese children and their nuclear families. The numbers of such families(More)
The risk of preterm delivery in a recent sample (1990-1994) of Italian liveborns was examined, taking into account child birth order, and maternal age and education in addition to the fetal gender. Univariate analyses showed that a higher risk was associated with male than female babies, with first- than second-born children, with older mothers, and with(More)
The increasing incidence of moderate preterm births (32–36 gestation weeks) might reflect a more general tendency toward a shortening of the gestational length occurring also in the term births (37 + gestation weeks). We examined all Italian 1st live born singletons (n = 2,356,365) and found that from 1990 to 1998 the births of 40 + gestation weeks(More)
OBJECTIVE To investigate the prevalence and the clinical significance of anticardiolipin antibodies (ACLs) in a group of children with systemic lupus erythematosus (SLE). DESIGN Cross-sectional and longitudinal study. SETTING Pediatric Clinic, University of Pavia, Italy. PARTICIPANTS Thirty children (aged 4.9 to 16.5 years) with SLE. MEASUREMENTS(More)
The downward trend in the sex ratio at birth that has occurred in several countries over the last 30 years was postulated to signal a deterioration in environmental conditions, particularly unfavourable for male conception and fetus survival. In Italy, in contrast, an upward trend has been observed. Assuming that exposure to reproductive hazards occurs(More)
Several studies have shown that the human secondary sex ratio is affected by a wide range of biological and environmental factors. Here, we describe a partitioning of the sex ratio variability as observed in the Italian population over the last two generations. This period has seen drastic changes in the environmental conditions of Italy. As a consequence,(More)
We tested the hypothesis that a large age difference between parents can shift the sex ratio at birth in favor of males, as Manning et al. (1997) suggested in their analysis of English and Welsh data. Among children born in Lombardy (northern Italy) in 1990 and 1991, we observed an anomalous excess of males born to a particular subsample of parents with a(More)
The aim of this study was to define normal values of albumin excretion rate (AER) in young people. We measured overnight timed AER (tAER, microgram/min) by a double-antibody radioimmunoassay in 281 healthy Italian children and adolescents (160 M and 121 F), aged 7-19 years. The frequency distribution of tAER deviated from normality, therefore percentiles(More)