Long-term effects of neonatal sodium restriction on blood pressure.

In 1980, a randomized trial was conducted among 476 Dutch newborn infants to study the effect of a low or normal sodium diet on blood pressure during the first 6 months of life. At the end of the trial, systolic blood pressure in the low sodium group (n = 231) was 2.1 mm Hg lower than in the control group (n = 245).

Toxocara seroprevalence in 5-year-old elementary schoolchildren: relation with allergic asthma.

Toxocara seroprevalence and the relation between Toxocara seroprevalence and allergic asthma were investigated in Dutch schoolchildren aged 4-6 years. Data on Toxocara antibodies, allergen-specific immunoglobulin E, allergic manifestations, and risk factors (pets and playgrounds) were obtained from 235 children from The Hague and 477 from Rotterdam, the Netherlands. The surveys were carried out from September 1987 to January 1988 in The Hague and in March and April 1989 in Rotterdam.

A randomized trial of sodium intake and blood pressure in newborn infants.

We studied the effect of dietary sodium on BP in a double-blind randomized trial with 245 newborn infants assigned to a normal-sodium diet and 231 to a low-sodium diet during the first six months of life. The sodium intake of the normal-sodium group was almost three times that of the low-sodium group. Systolic BP was measured every month from the first week until the 25th week.