The authors studied the effects and population-level impact of short (< or = 12 months) interpregnancy intervals on the risks for low (<2.5 kg) birth weight and preterm (<37 weeks) delivery of liveborn singleton infants to US African American, Mexican, Native American, non-Hispanic white, and Puerto Rican mothers (n = 4,841,418) from 1989 to 1991. Statistical analyses were done by using the Man...

This retrospective cohort study evaluated adverse birth outcomes in infants whose birth records indicated maternal residence in villages containing dumpsites potentially hazardous to health and environment. Birth records from 1997 to 2001 identified 10,073 eligible infants born to mothers in 197 Alaska Native villages. Outcomes included low or very low birth weight, preterm birth, and intrauter...

BACKGROUND Although immigrants to the United States are usually ethnic minorities and socioeconomically disadvantaged, foreign-born women generally have lower rates of low birth weight infants than do US-born women. OBJECTIVE To measure the relationship between maternal birthplace, ethnicity, and low birth weight infants. DESIGN Retrospective cohort study of birth certificate data. SETTIN...

Preterm delivery remains the most important complication of multiple pregnancies. We describe six cases of successful delay of the subsequent child(ren) after very preterm birth of the first-born, with intervals ranging between 14 and 117 days. Based on our findings and on the available literature, we propose a set of guidelines for the management of early preterm multiple birth deliveries, inc...

BACKGROUND Pediatric laboratory test results must be interpreted in the context of interindividual variation and age- and sex-dependent dynamics. Reference intervals as presently defined for separate age groups can only approximate the age-related dynamics encountered in pediatrics. Continuous reference intervals from birth to adulthood are not available for most laboratory analytes because of ...

We establish the optimal rates of strong approximation by Wiener process for vector-valued cumulative processes. The Komlós–Major–Tusnády bounds are given both in case when exponential moments exist and power case. Applications to invariance principle stopped sums birth death processes provided. As a tool we use maximal inequality over random intervals which is independent interest.

Abstract We analyse the evolution of birth-baptism intervals between 1830 and 1949 among children born into 815 Spanish families relate changes observed to developments in childhood mortality. Our results show that our study area increased rapidly after 1890, three decades mortality began decline a decade before fertility fall. confirm increasing their children's births baptisms 1890 were those...