The applicability of the global lung initiative equations and other regional equations on a sample of healthy Middle Eastern adolescents

Al‐Qerem, Walid; Alassi, Ameen; Jarab, Anan S.; Ling, Jonathan

doi:10.1111/crj.13329

Cited by 7 publications

(5 citation statements)

References 31 publications

(80 reference statements)

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“…The largest average difference was observed in FVC among men and the lowest difference was related to FEV 1 /FVC index in men and women. In a study conducted on Jordanian people over 18 years old, based on Bland and Altman results, there were significant differences between the new equation and GLI for Caucasians equations too [24,28].…”

Section: Discussionmentioning

confidence: 90%

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Normal spirometry prediction equations for the Iranian population

et al. 2022

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Background This study aimed to establish normative spirometric equations in a healthy population of Iranian children and adults, and compare these equations with those developed by the Caucasian Global Lung Initiative (GLI) for the first time. Methods Spirometric data from healthy Iranian aged 4–82 years sampled in 2019 were used to derive reference equations using the generalized additive model for location (mu), shape (lambda), and scale (sigma). Results A total of 418 females and 204 males were included in the study. Applying the GLI standards for the Iranian population resulted from the Z scores of FEV1, FVC, FEV1/FVC, and FEF25−75% was not different from zero. Based on the newly calculated LLN, eleven individuals showed significant values below the LLN for FEV1/FVC. In all age groups, this frequency was less than 5%, except for men over 70 years of age, which was 12.5%. There are significant differences between new data and GLI for Caucasian data. Conclusion It is recommended that the values and equations generated from this study should be used by physicians and technicians in their routine practice for the diagnosis and assessment of pulmonary disorders.

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Section: Discussionmentioning

confidence: 90%

“…In a study conducted on Jordanian people over 18 years old, based on Bland and Altman results, there were significant differences between the new equation and GLI for Caucasians equations too [ 24 , 28 ].…”

Section: Discussionmentioning

confidence: 99%

Normal spirometry prediction equations for the Iranian population

et al. 2022

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“…In a study conducted on Jordanian people over 18 years old, based on Bland and Altman results, there were signi cant differences between the new equation and GLI for Caucasians equations too 16,20 .…”

Section: Discussionmentioning

confidence: 92%

Normal Spirometry Prediction Equations for the Iranian population

Sahebi

Rahimi

Shariat

et al. 2022

Preprint

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This study aimed to establish normative spirometric equations in a healthy population of Iranian children and adults, and compare these equations with those developed by the Caucasian Global Lung Initiative (GLI) for the first time. Methods: Spirometric data from healthy Iranian aged 4–82 years sampled in 2019 were used to derive reference equations using the generalized additive model for location (mu), shape (lambda), and scale (sigma). Results: A total of 418 females and 204 males were included in the study. Applying the GLI standards for the Iranian population resulted from the Z scores of FEV1, FVC, FEV1/FVC, and FEF 25-75% was not different from zero. Based on the newly calculated LLN, eleven individuals showed significant values below the LLN for FEV1/FVC. In all age groups, this frequency was less than 5%, except for men over 70 years of age, which was 12.5%. There are significant differences between new data and GLI for Caucasian data. Conclusions: It is recommended that the values and equations generated from this study should be used by physicians and technicians in their routine practice for the diagnosis and assessment of pulmonary disorders.

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“…Further details about the health status evaluation and inclusion criteria are available in previous studies. 10,12 According to a previous study, the minimum required sample size to avoid sampling error differences is 150 for each sex. 14 Ethical approval was obtained from the Ministry of Health,…”

Section: Populationmentioning

confidence: 99%

“…9 The non-perfect suitability of GLI-2012 equations to the Middle East populations was reported in several studies. [10][11][12] Therefore, a previous set of spirometric equations was developed for adult Jordanians, which improved the diagnosis and evaluation of different respiratory diseases. 13 However, specific equations for Jordanian children are still lacking.…”

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confidence: 99%

Spirometry reference equations for children from a Middle Eastern population

Al‐Qerem

2021

Int J Clin Pract

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Asthma is a long-term non-communicable disease that affected more than 339 million people in 2016. 1 Even with the advancement in the methods of diagnosis and treatment, asthma prevalence is increasing in several world regions and continues to cause considerable mortality and morbidity. 2 Asthma symptoms first onset commonly occurs during the preschool years, 3 and it is considered as the most common and serious chronic disease among children. 4 Nevertheless, asthma diagnosis in children is challenging, 5 and there is no gold standard test to make the diagnosis. 6 However, spirometry test has been proven to be a clinically useful technique that can be used to evaluate lung function in different age groups including children. 7 Spirometric reference values differ based on several factors including age, sex, height, weight and ethnic origin. 8 On the basis of these factors, different equations had been developed to predict spirometric reference values that can be used to interpret spirometric results. However, several challenges arose when it came to interpreting the spirometric results of the children as wrong interpretation of spirometric results was not uncommon. 6 In the Middle East, the spirometric result interpretation is even more complicated as the commonly used reference equations (mostly pre-installed equations in the spirometric devices/software) were developed based on data

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The applicability of the global lung initiative equations and other regional equations on a sample of healthy Middle Eastern adolescents

Cited by 7 publications

References 31 publications

Normal spirometry prediction equations for the Iranian population

Normal spirometry prediction equations for the Iranian population

Normal Spirometry Prediction Equations for the Iranian population

Spirometry reference equations for children from a Middle Eastern population

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