From: Waist circumference and pulmonary function: a systematic review and meta-analysis
Author, year, place | Age (years) | Design | Waist circumference measurement method | Sample | Sex | Effect | Adjustments |
---|---|---|---|---|---|---|---|
Canoy and colleagues, 2004[3], UK | 45 to 79 | Cohort with cross-sectional analysis | Smallest circumference between the ribs and iliac crest (quintiles) | 9,674 | Male | FEV1 (ml): β = −120.3 (95% CI = −134.6, –106.1). FVC (ml): β = −129.1 (95% CI = −147.9. –110.2) | Age, height, BMI |
11,876 | Female | FEV1 (ml): β = −53.2 (95% CI = −62.0, –44.5). FVC (ml): β = −60.5 (95% CI = −71.7, –49.2) | |||||
Carey and colleagues, 1999[7], UK | 18 to 73 | Cohort | Midpoint between the ribs and iliac crest (difference in standard deviations of the measure in different follow-ups) | Male | ΔFEV1 (ml): 18 to 45 years, β = −30.0 (SE 12.0); 46 to 73 years, β = −53.0 (SE 14.0) | Delta FEV1 adjusted for height and age | |
Female | ΔFEV1 (ml): 18 to 45 years, β = −42.0 (SE 10.0); 46 to 73 years, β = −30.0 (SE 11.0) | ||||||
Chen and colleagues, 2001[8], UK | 25 to 64 | Cross-sectional | Midpoint between the ribs and iliac crest (centimeters) | 865 | Male | FEV1 (l): β = −0.017 (SE 0.004). FVC (l): β = −0.008 (SE 0.004) | Height, age, weight, current occupation, caloric intake and smoking |
971 | Female | FEV1 (l): β = −0.009 (SE 0.002). FVC (l): β = −0.007 (SE 0.003) | |||||
Chen and colleagues, 2009[9], Canada | 6 to 17 | Cross-sectional | Smallest circumference between the ribs and iliac crest (centimeters) | 718 | Both | FEV1 (l): β = 0.002 (SE 0.001). FVC (l): β = 0.004 (SE 0.002). Relation FEV1/FVC: β = −0.053 (SE 0.027) | Sex, age, weight and height |
Chen and colleagues, 2007[5], Canada | 18 to 79 | Cross-sectional | Smallest circumference between the ribs and iliac crest (centimeters) | 1,674 | Both | FEV1 (l): β = −0.011 (SE 0.002). FVC (l): β = −0.013 (SE 0.002). Relation FEV1/FVC: β = −0.031 (SE 0.025) | Sex, age, height, weight and smoking |
Choi and colleagues, 2011[21], South Korea | ≥19 | Cross-sectional | Midpoint between the ribs and iliac crest (centimeters) | 1,059 | Male | FVC (% predicted): β = −0.17 (SE 0.059). Relation FEV1/FVC: β = 0.0007 (SE 0.0005) | Smoking, blood glucose, systolic blood pressure, total cholesterol, triglyceride and HDL |
1,555 | Female | FVC (% predicted): β = −0.15 (SE 0.04). Relation FEV1/FVC: β = −0.0001 (SE 0.002) | |||||
Ochs-Balcom and colleagues, 2006[11], USA | 35 to 65 | Cross-sectional | Smallest circumference between the ribs and iliac crest (centimeters) | 985 | Male | FEV1 (% predicted): β = −0.233 (SE 0.04). FVC (% predicted): β = −0.350 (SE 0.04). Relation FEV1/FVC: β = 0.089 (SE 0.02) | Smoking, schooling and eosinophils. FEV1/FVC ratio adjusted for age, height and skin color too |
1,168 | Female | FEV1 (% predicted): β = −0.086 (SE 0.03). FVC (% predicted): β = −0.176 (SE 0.03). Relation FEV1/FVC: β = 0.086 (SE 0.02) | |||||
Paek and colleagues, 2010[22], South Korea | ≥19 | Cross-sectional | Smallest circumference between the ribs and iliac crest (centimeters) | 4,001 | Both | FEV1 (% predicted): β = −0.21. FVC (% predicted): β = −0.13. Relation FEV1/FVC: β = −0.029 | Relation WC/height, age, sex, smoking, physical activity, alcohol consumption and socioeconomic status |
Steele and colleagues, 2009[20], UK | 40.6 (mean) | Cohort with cross-sectional analysis | Midpoint between the ribs and iliac crest (centimeters) | 238 | Male | FEV1 (l): β = −0.02 (95% CI = −0.02, –0.01). FVC (l): β = −0.025 (95% CI = −0.032, –0.018) | Age, height and smoking |
364 | Female | FEV1 (l): β = −0.004 (95% CI = −0.008, –0.001). FVC (l): β = −0.004 (95% CI = −0.009, 0.001) | |||||
Ubilla and colleagues, 2008[19], Chile | 21 to 28 | Cohort with cross-sectional analysis | Navel line (terciles, middle as reference) | 550 | Male | FEV1 (ml): lower tercile, β = 93.1 (95% CI = 14.4, 200.6); upper tercile, β = −76.9 (95% CI = −183.2, 29.5). FVC (ml): lower tercile, β = 80.7 (95% CI = 43.0, 204.4); upper tercile, β = −98.8 (95% CI = −221.2, 23.6) | Age, height, smoking, number of siblings, schooling and gestational age. Nutritional variables throughout life, except BMI |
671 | Female | FEV1 (ml): lower tercile, β = −62.1 (95% CI = −132.1, 7.9); upper tercile, β = −22.1 (95% CI = −93.7, 49.5). FVC (ml): lower tercile, β = −96.2 (95% CI = −177.1, –15.2); upper tercile, β = −42.5 (95% CI = −125.3, 40.3) |