JOURNAL ARTICLE

Interpretative consequences of adopting the Global Lungs 2012 reference equations for spirometry for children and adolescents

Philip H Quanjer, Daniel J Weiner
Pediatric Pulmonology 2014, 49 (2): 118-25
24115510

OBJECTIVE: To determine the interpretative consequences of adopting the Global Lungs 2012 (GLI-2012) spirometric prediction equations in a pediatric hospital population.

MATERIAL: Spirometric records from 2,192 white boys and 1,842 white girls, and 412 and 334 African-American boys and girls, respectively, aged 6.0-18.0 years, treated mainly for asthma, cystic fibrosis, cough, and dyspnoea.

METHODS: Predicted values and lower limits of normal were calculated for FEV1, FVC, and FEV1/FVC, using prediction equations from GLI-2012, Hankinson, Knudson, Polgar, Wang, and Zapletal. Obstruction was defined as FEV1/FVC < LLN, a restrictive pattern as FEV1/FVC > LLN and FVC < LLN.

RESULTS: There was good agreement for predicted values for FEV1, FVC, and FEV1/FVC from GLI-2012, Hankinson and Wang equations within ethnic groups. A near normal FEV1 but above normal FVC contributed to a low FEV1/FVC, particularly in African-Americans. Polgar, Knudson, and Zapletal predicteds produced disparate results. A restrictive pattern occurred in 2.2-11.2% of cases, with no statistical difference between GLI-2012 and Hankinson.

CONCLUSIONS: Transition from Hankinson and Wang equations to GLI-2012 leads to grossly similar prevalence rates of abnormally low values for FEV1, FVC, and FEV1/FVC, unlike equations from Knudson, Polgar, and Zapletal.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read
24115510
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"