Risk factors of infantile spasms compared with other seizures in children under 2 years of age.

To analyze the magnitude of the risk factors for infantile spasms, we evaluated the records of 80 children with infantile spasms, 474 children with other types of epilepsy, 2,196 children with febrile seizures, and 262 children with CNS infections. There was a family history of seizures in 13.8% of children with infaNtile spasms, 28.

Pertussis immunization and characteristics related to first seizures in infants and children.

In a previous study in which we examined the relationship of pertussis immunization to the onset of neurologic disorders during 1967 and 1968 and during 1972 and 1973 in Denmark, there were 554 children with initial onset of epilepsy and 2158 children with first febrile convulsions. In the study population there were 112 children with epilepsy and 229 children with febrile convulsions for whom the exact date of pertussis immunization and the exact date of the onset of illness were known. We analyzed selected clinical variables by specific time intervals between pertussis immunization and the first seizure.

Relationship of pertussis immunization to the onset of neurologic disorders: a retrospective epidemiologic study.

A retrospective epidemiologic study examining the relationship of the time of onset of neurologic disorders with the time of pertussis immunization in two cohorts of children who received pertussis immunization at different ages is reported. Before April 1970, children in Denmark were vaccinated with diphtheria and tetanus toxoids with pertussis vaccine at 5, 6, 7, and 15 months of age. Since 1970, children were given monovalent pertussis vaccine at 5 and 9 weeks and at 10 months of age.

Chronic otitis media and sequelae in the population of Greenland.

It is generally recognized that chronic otitis media and sequelae of this disease are frequently encountered among the native population of Greenland, but the prevalence of chronic otitis in Greenland has not previously been systematically traced. Treatment for this disease has improved and we expect an increased demand for treatment of this disease among Greenland natives. To evaluate the need of treatment the prevalence of chronic otitis media in two large Greenland towns was assessed.

Relationship of pertussis immunization to the onset of epilepsy, febrile convulsions and central nervous system infections: a retrospective epidemiologic study.

A change in the pertussis immunization schedule in Denmark allowed a retrospective study examining the relationship of the time of onset of selected neurologic disorders with the time of pertussis immunization in two core cohorts of children. Records of 2,199 children with febrile seizures were reviewed and a significant association between first febrile seizures and the scheduled age of pertussis immunization was noted (p = 0.004).

Otitis media in Greenland children: acute, chronic and secretory otitis media in three- to eight-year-olds.

The middle ear status was examined in 142 children aged three to eight years from Sukkertoppen and Kangamiut in Greenland. The investigation is based on social-pediatric and otologic histories and on objective examination using otomicroscopy and tympanometry. Three-fourths of the small children had a previous history of otitis, some with repeated instances.

Relation between breast-feeding and incidence rates of insulin-dependent diabetes mellitus. A hypothesis.

The variations in incidence rates of insulin-dependent diabetes mellitus (IDDM) in childhood within and between genetically very similar Scandinavian populations and the variations in incidence rates with time are difficult to explain. Epidemiological data show that the incidence of childhood IDDM may now be declining and suggest an inverse correlation between breast-feeding frequency and IDDM in childhood. Case-control data show that diabetic children were breast-fed for shorter periods of time than their healthy siblings and the population at large and that a smaller proportion of diabetic children were ever breast-fed.

Perinatal hazards and future development.

From the longitudinal Copenhagen Child Health Study some results from a follow-up of 9,182 newborns to 1 year of age are presented. 9.7% of low birth-weight children had at that time defined neurological symptoms, compared to only 1.