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1.  Nationwide age references for sitting height, leg length, and sitting height/height ratio, and their diagnostic value for disproportionate growth disorders 
Archives of Disease in Childhood  2005;90(8):807-812.
Aims: To obtain age references for sitting height (SH), leg length (LL), and SH/H ratio in the Netherlands; to evaluate how SH standard deviation score (SDS), LL SDS, SH/H SDS, and SH/LL SDS are related to height SDS; and to study the usefulness of height corrected SH/H cut-off lines to detect Marfan syndrome and hypochondroplasia.
Methods: Cross-sectional data on height and sitting height were collected from 14 500 children of Dutch origin in the age range 0–21 years. Reference SD charts were constructed by the LMS method. Correlations were analysed in three age groups. SH/H data from patients with Marfan syndrome and genetically confirmed hypochondroplasia were compared with height corrected SH/H references.
Results: A positive association was observed between H SDS, SH SDS, and LL SDS in all age groups. There was a negative correlation between SH/H SDS and height SDS. In short children with a height SDS <–2 SDS, a cut-off limit of +2.5 SD leads to a more acceptable percentage of false positive results. In exceptionally tall children, a cut-off limit of –2.2 SDS can be used. Alternatively, a nomogram of SH/H SDS versus H SDS can be helpful. The sensitivity of the height corrected cut-off lines for hypochondroplasia was 80% and for Marfan syndrome only 30%.
Conclusions: In exceptionally short or tall children, the dependency of the SH/H ratio (SDS) on height SDS has to be taken into consideration in the evaluation of body proportions. The sensitivity of the cut-off lines for hypochondroplasia is fair.
PMCID: PMC1720514  PMID: 15863466
2.  Influence of intranasal steroids during the grass pollen season on bronchial responsiveness in children and young adults with asthma and hay fever 
Thorax  2000;55(10):826-832.
BACKGROUND—It has been reported that intranasal corticosteroids can influence bronchial hyperresponsiveness (BHR) in asthmatic subjects with seasonal rhinitis. The purpose of the present study was to evaluate the effect of intranasal fluticasone propionate and beclomethasone dipropionate on BHR and bronchial calibre (forced expiratory volume in one second, FEV1) in children and young adults with seasonal rhinitis and mild asthma during two consecutive grass pollen seasons.
METHODS—In the first pollen season 25 patients aged 8-28 years were included in a double blind, placebo controlled study. The active treatment group used fluticasone aqueous spray 200 µg once daily. In the second pollen season 72 patients aged 8-28 years participated in a double blind, placebo controlled study of a similar design to that of the previous year except that an additional treatment group of patients using beclomethasone 200 µg twice daily was included. FEV1 was measured before and after three and six weeks of treatment; BHR to methacholine (PD20) was measured before and after six weeks of treatment.
RESULTS—In the first season the mean (SD) logPD20 of the patients decreased significantly both in the fluticasone group (from 2.43(0.8) µg to 1.86 (0.85) µg) and in the placebo group (from 2.41(0.42) µg to 1.87 (0.78) µg) without any intergroup difference in the change in logPD20. In the second pollen season the mean logPD20 in the fluticasone, beclomethasone, and placebo groups did not change significantly.
CONCLUSIONS—Intranasal steroids did not influence BHR during two grass pollen seasons in children and young adults with seasonal rhinitis and mild asthma.

PMCID: PMC1745622  PMID: 10992533
3.  Body index measurements in 1996-7 compared with 1980 
Archives of Disease in Childhood  2000;82(2):107-112.
OBJECTIVES—To compare the distribution of body mass index (BMI) in a national representative study in The Netherlands in 1996-7 with that from a study in 1980.
METHODS—Cross sectional data on height, weight, and demographics of 14 500 boys and girls of Dutch origin, aged 0-21 years, were collected from 1996 to 1997. BMI references were derived using the LMS method. The 90th, 50th, and 10th BMI centiles of the 1980 study were used as baseline. Association of demographic variables with BMI-SDS was assessed by ANOVA.
RESULTS—BMI age reference charts were constructed. From 3 years of age onwards 14-22% of the children exceeded the 90th centile of 1980, 52-60% the 50th centile, and 92-95% the 10th centile. BMI was related to region, educational level of parents (negatively) and family size (negatively). The −0.9, +1.1, and +2.3 SD lines in 1996-7 corresponded to the adult cut off points of 20, 25,and 30 kg/m2 recommended by the World Health Organisation/European childhood obesity group.
CONCLUSION—BMI age references have increased in the past 17 years. Therefore, strategies to prevent obesity in childhood should be a priority in child public health.

PMCID: PMC1718204  PMID: 10648362

Results 1-3 (3)