Spirometric reference values in Estonian schoolchildren

Abstract

This study was conducted to describe the relationship between anthropometric parameters and lung function in Estonian children, to determine the reference values for spirometry, and to compare these results with other data sets. The results are based on 1170 healthy non-smoking children (643 girls and 527 boys), aged 6-18 years. The spiroanalyser Pneumoscreen II (Jaeger) was used to register dynamic lung parameters. Natural logarithmic values of lung volumes, standing or sitting height and age were used in the final regression model. Prediction equations for forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), peak expiratory flow, forced expiratory flows when 50 and 75% of FVC has been exhaled, and mean forced expiratory flow over the middle 50% of the FVC for both sexes are presented. In comparison with recent data from European children the reference values were close for FVC, the differences were bigger for FEV1 and forced expiratory flows, especially in taller children.

Spirometric reference values for children and adolescents from Kazakhstan

“…R 2 values found in our reference models for FEV1 and FVC (0.712À0.824) are perfectly in line with the literature, indicating that the most part of variance of these parameters was explained by predictor variables considered in this study. Finally, RSD of the models are also consistent with the literature, when logarithmic models for FVC and FEV1 have been considered (Quanjer et al 1995;Ip et al 2000;Kivastik and Kingisepp 2001;Al-Riyami et al 2004). …”

“…Standardized residual plots are also reported. The final prediction model was compared with several models available in the literature (Knudson et al 1983;Lebecque et al 1991;Rosenthal et al 1993;Quanjer et al 1995;Sirotkovic and Cvoriscec 1995;Parma et al 1996;Hankinson et al 1999;Ip et al 2000;Kivastik and Kingisepp 2001;Golshan et al 2003;Al-Riyami et al 2004;Chinn et al 2006) using median values of the difference between measured and predicted values and the difference between 5th and 95th percentiles (Tables I and II). Residual standard deviation (RSD) as goodness-of-fit test is also reported for all experimental models.…”

Overexpression of claudin‐3 and claudin‐4 receptors in uterine serous papillary carcinoma

“…Therefore, in order to obtain prediction equations applicable through childhood to adolescent, age factor must be included. Majority of the recent reports on spirometric prediction equations including adolescent ages employ age and height as predictors and a wide variety of regression models have been applied 9, 10, 16–21. In Japan, Tamura et al22 recently reported reference equations for young Japanese employing age and height as predictors, and they also developed reference equations commonly applicable from children to adults 23.…”

Normal spirometric reference values for Omani children and adolescents

“…Correlation coefficients for the spirometric parameters with age, height and weight were also computed for each sex. Comparisons with published equations were made by deriving the predicted and per cent predicted values for the subjects using the investigators’ own equations and a number of selected published equations 6,14 , 18,20 …”