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Biomedical subjects

J D Reerink

Publications and source records attributed to J D Reerink.

12 recordsLinked to original sources
PubMed2001

Reluctance to continue breastfeeding in The Netherlands.

UNLABELLED: A prospective cohort study of breastfeeding practice (0-4 mo) was carried out in well-baby clinics. The cohort included 4438 newborns brought to a clinic for the first time between 1 April and 1 July 1998. The odds ratios of demographic and gestational variables connected with the start and duration of breastfeeding were measured. The frequency of the reasons why breastfeeding was interrupted was determined. At birth 71% of the infants included in this study were exclusively breastfed. After 4 mo the percentage had dropped to 21%. Breast milk was replaced directly by formula (23%) or by a mixture of breast milk and formula (77%). Exclusive breastfeeding was given irrespective of the mother's cultural background. Higher education appeared to be the most decisive factor for the initiation of exclusive breastfeeding; higher parity was found to be the most decisive factor for continuation. In 46% of cases the infant's health and behaviour caused mothers to stop exclusive breastfeeding; in 38% the reasons were mother related; in 17% both mother- and infant-related motives were mentioned. CONCLUSION: Mothers' perception of hunger and crying colics were the main infant-related reasons for cessation of breastfeeding, whereas physical problems, return to work, doubt about the sufficiency of breast milk and the feeling of being restricted by breastfeeding were the main mother-related reasons. The decision to abandon exclusive breastfeeding was made primarily by mothers (71%). In The Netherlands more babies are breastfed at birth than was the case 10 y ago, but the duration of the breastfeeding period has become shorter.

Adolescent↗
PubMed1998

Maternal smoking during lactation: relation to growth during the first year of life in a Dutch birth cohort.

A recent article by Little et al. (Am J Epidemiol 1994;140:544-54) reported that infants in Seattle, Washington, who were breastfed by mothers who smoked gained more weight than either infants who were breastfed by mothers who did not smoke or infants who were bottle-fed by mothers who smoked. In this study, the authors aimed to verify this result with the use of data from the Social Medical Survey of Children Attending Child Health Clinics (SMOCC) cohort, a nationally representative cohort of 2,151 children born in the Netherlands in 1988-1989. During the first year of life, data on type of milk feeding, weight, length, and head circumference were collected at 1, 2, 3, 6, 9, and 12 months of age. Infants of smokers who were mainly breastfed in the first 3 months of life (n = 117) were compared with similarly breastfed infants of nonsmokers (n = 572), with infants of smokers who had been mainly bottle-fed (n = 270), and with infants of nonsmokers who had been mainly bottle-fed (n = 535). The authors failed to observe any additional increase in body mass, length, or head circumference in infants of breastfeeding smokers compared with infants of the three other groups. When the authors used all of their data to study growth with a multivariate longitudinal regression model (general estimating equations (GEE) model), the data showed clearly reduced growth in breastfed children (limited to the period after the second month of life) and some "catch-up" growth in body mass and head circumference in children with intrauterine exposure to tobacco.

Birth Weight↗
PubMed1995

Paroxysmal phenomena in the first two years of life.

The prevalence of paroxysmal phenomena in the first two years of life was assessed in 1854 children of Dutch-speaking mothers of a population-based birth cohort. At each visit to the Child Health Clinic (CHC), mothers were asked whether they had noted sudden change of consciousness, involuntary movements, deviation of the eyes or apnoea, and if so, whether these appeared to be related to feeding. Paroxysmal episodes occurred in a quarter of the children: in 8 per cent only in relation to feeding, in 19 per cent also not related to feeding. The latter children were more frequently admitted to hospital and had more disabilities at age two years. No connection with epilepsy in the family or with congenital anomalies could be demonstrated. Special attention should be paid by the CHC team to children with paroxysmal phenomena not associated with feeding.

Birth Weight↗
PubMed1994

[Use of health care services by children in the first 2 years of life in The Netherlands].

OBJECTIVE: To assess consumption of medical care for infants and toddlers provided by general practitioners and specialists, and of hospital admissions for young children. DESIGN: Descriptive. SETTING: Dutch Child Health Clinics (CHC). METHOD: An aselect cohort of newborns of 1988/89 of the Social Medical Survey of children attending Child health Clinics (SMOCC) were followed for two years; at maximally 8 CHC visits data were collected on the preceding interval. RESULTS: Health problems as observed in the CHCs like hearing disorders, strabismus, congenital hip dysplasia and growth disturbances were present as a cause for consultation of a GP or specialist in one out of six. Over 95% of the children went to consult their GP, 30% to a paediatrician, 20% to another specialist. Twelve per cent of the children was admitted to hospital, 10% of these more than once. Accidents caused 10% of all visits to a doctor in primary or secondary health care. Children with any form of disability at the age of two (6%) made use of the health care system as indicated in this study about three times more frequently than the non-disabled children. CONCLUSION: Nearly every child under two visited a GP, many a specialist. Timely recognition of specific health problems at the CHC prevents delay in treatment, and limits the harm in development as well as the costs.

Amblyopia↗
PubMed1994

[The significance of convulsion-like signs in the first 2 years of life].

OBJECTIVE: Assessment of the prevalence of convulsion-like symptoms in 1854 children of Dutch-speaking mothers of a population-based birth cohort. METHOD: At each child health clinic (CHC) visit mothers were asked whether they had noted any of the following signs: loss of consciousness, involuntary movements, eye rotation movements and apnoea, and if so, whether these appeared to be related to feeding. Registration was done by the CHC physician during eight consultations. RESULTS: Convulsion-like symptoms occurred in a quarter of the children: in 8% exclusively in relation to feeding, almost without exception in the first three months of life, in 19% also without relation to feeding, continuing until the second birthday. The latter children were more frequently admitted into hospital, even for non-neurological problems, than the former or than children without any such signs. They also have more disabilities at the age of two years. No connection with epilepsy in the family or with congenital anomalies could be demonstrated. CONCLUSION: Convulsion-like symptoms were observed in a quarter of children up to the age of two years. Special attention should be paid by the CHC team to children with signs not connected with feeding.

Child, Preschool↗
PubMed1994

Social class, ethnicity and other risk factors for small for gestational age and preterm delivery in The Netherlands.

Social class and ethnicity are important risk factors for small-for-gestational-age and preterm delivery in many countries. This study was performed to assess whether this is also the case in the Netherlands, a country with a high level of social security, relatively small income differences and easy access to medical care for all its inhabitants. Other risk factors that were taken into account were smoking, drinking, occupation, age and height. Information was collected by interview in the first 3 weeks of life of the mothers of 2027 (response 97%) live-born singletons born in the period from April 1988 to October 1989 in the study area. After adjustment for possible confounding factors very low social class, compared with high social class, was significantly associated with reduced birthweight (-4.0%; 95% CI, -7.4% to -0.7%), but not with preterm delivery (OR, 2.09; 95% CI, 0.67-6.48). The adjusted birthweight of Turkish infants (2.7%; 95% CI, -1.1% to 6.5%) and the adjusted birthweight of infants from Suriname or the Antilles (-1.6%; 95% CI, -5.5% to 2.1%) were not significantly different compared with infants of Dutch mothers. After adjustment, the frequency of preterm birth was lower in Turkish infants, but not significantly (OR, 0.22; 95% CI, 0.04-1.10), whereas the frequency of preterm birth in infants from Suriname or the Antilles was significantly higher (OR, 2.51; 95% CI, 1.04-6.08) compared with Dutch infants. Of the other factors the main risk factors were smoking (negatively related with birth-weight) and maternal age(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1993

[Relationship between socioeconomic status and differences in health care utilization in pregnancy, delivery and puerperium].

OBJECTIVE: Description of differences in pre-, peri- and postnatal care, according to socio-economic status (SES). SETTING: Geographically defined areas of 21 child health clinics (CHC) in several parts of the Netherlands. DESIGN: Retrospective cohort study. MATERIALS AND METHOD: Of all women who delivered a live-born child in the period April 1988-October 1989 and who were residents of the districts of the CHCs (n = 2119), data were recorded during the home visit post partum by the district nurses. Complete data were available of 2060 (97.2%) mothers. The care provided was defined as prenatal care and attendance at delivery (midwife, general practitioner, obstetrician and combinations), place and mode of delivery, and place of lying-in period. The indicator for SES was the educational level of the mother. In multivariate analyses, age, parity, degree of urbanisation of residential area, distance between home and hospital, ethnicity, height, smoking, health problems during pregnancy, obstetrical history, preterm birth and low birth weight were included in order to correct for possible confounding effects of these factors. RESULTS: Compared to the higher SES group, there was an increased risk in the lower SES group for a delivery in hospital (OR 1.60; 95% CI 1.16-2.20); the probability of having a complete lying-in period at home decreased according to the SES level (low SES: OR 0.47; 95% CI 0.34-0.65). Differences in mode of delivery (notably caesarean section) were very small and not significant. CONCLUSIONS: In the Netherlands there are socio-economic differences in perinatal care and the place of the lying-in period. Women of higher SES delivered more often at home and more often had their lying-in period at home, irrespective of other factors. Preferences of the mothers with respect to place of confinement were not taken into account in this study.

Adolescent↗
PubMed1993

[Congenital disorders in the first year of life].

OBJECTIVE: Assessment of the prevalence of congenital malformations in a population-based birth cohort of 2151 children. METHOD: Information about congenital malformations was obtained of 2092 infants by the Child Health Clinic nurses and by the CHC physician during six consultations in the first year of life. RESULTS: In 29% of the infants a congenital malformation was diagnosed. In 37 children (1.8%) 40 major malformations were found. More than three quarters of the malformations were diagnosed in the first three months of life. Using the EUROCAT criteria, a difference existed between the incidence of congenital malformations in liveborn infants in SMOCK (4.0%) and in EUROCAT (2.3%). This difference is mainly caused by the difference in the number of reports on congenital hip dislocation. The prevalence of major defects was similar in both SMOCK (central nervous system: 14/10,000; circulatory system: 67/10,000; ventricular septal defect 29/10,000; schisis: 14/10,000; Down syndrome: 14/10,000) and EUROCAT: CONCLUSION: By systematic and structured reporting it is possible to obtain more complete information on the prevalence of congenital malformations than by voluntary notification. One quarter of the congenital malformations is not detected before the age of 3 months.

Cohort Studies↗
PubMed1991

[National testis registration].

In order to gain an impression of the documentation of the testes position in the first few days after delivery an inquiry was held among all clinical paediatricians. The response was 62%. Figure I shows where the localisation of the testes is registered systematically and where it is not. Between 1982 and 1988 the number of operations for undescended testes according to figures from the Dutch Centre for Health Care Information (SIG) decreased from 5928 to 2889. The expected number of operations per year is approximately 800. The number of unilateral orchidopexy operations per 1000 boys of 0-19 years old per year shows considerable geographic variation: in 1982 it ranged from 1.1 to 4.8 and in 1988 from 0.5 to 2.4. The documentation of the position of the testes in the first few days after delivery is important to prevent unnecessary operations.

Adolescent↗
PubMedDate not supplied

Growth in length and weight from birth to 2 years of a representative sample of Netherlands children (born in 1988-89) related to socioeconomic status and other background characteristics.

Of nearly 1900 live-born singletons, born from April 1988 to October 1989 inclusive, nine measurements of length and weight have been taken between the ages of 1 and 24 months. In the first part of the study, differences in attained length and weight at 1 and 2 years of age are analysed according to socioeconomic status (SES). Multiple regression analyses are used to investigate the association of SES and other background characteristics with length and weight. The second part focuses on the analysis of differences in linear length and weight gain in the first 2 years of life, using a two-step regression technique. At 1 and 2 years of age, differences in attained length and weight and in length and weight gain according to SES are small and not significant, except for the children of Mediterranean parents in the low-SES group, who are significantly heavier than children of all other groups and gain significantly more in weight compared to children of Dutch parents in the low-SES group. Of all the factors studied it appears that parental height, birthweight, parity and ethnic descent of the parents are associated with attained length and weight at 1 and 2 years of age. Of these factors, ethnic descent, however, is not associated with length gain. A small but statistically significant catch-up growth is found in children of mothers who smoked during pregnancy.

Age Factors↗