Table 1 Baseline characteristics of NHANES participants from 2007 to 2012 (n = 10,055)
Characteristics | NPAR | P-value | |||
|---|---|---|---|---|---|
Q1(n = 2,491) | Q2(n = 2,527) | Q3(n = 2,523) | Q4(n = 2,514) | ||
Age, years | 41.90 ± 15.17 | 44.46 ± 14.77 | 45.55 ± 15.35 | 46.79 ± 15.40 | < 0.0001 |
Age, years | < 0.0001 | ||||
< 60 | 85.67 | 82.73 | 78.66 | 76.19 | |
>=60 | 14.33 | 17.27 | 21.34 | 23.81 | |
Sex, N (%) | < 0.0001 | ||||
Male | 43.84 | 49.63 | 52.77 | 55.37 | |
Female | 56.16 | 50.37 | 47.23 | 44.63 | |
Ethnicity/Race, N (%) | 0.1575 | ||||
Mexican American | 8.49 | 7.93 | 7.79 | 6.50 | |
Other Hispanic | 5.36 | 5.01 | 4.43 | 5.42 | |
Non-Hispanic White | 70.00 | 72.35 | 71.50 | 71.31 | |
Non-Hispanic Black | 10.36 | 8.96 | 10.37 | 10.06 | |
Another race | 5.80 | 5.75 | 5.91 | 6.71 | |
Education, N (%) | 0.0189 | ||||
Less than 9th grade | 4.17 | 3.39 | 4.30 | 4.57 | |
9-11th grade | 11.10 | 9.63 | 12.12 | 12.57 | |
High school graduate/GED or equivalent | 21.86 | 23.66 | 21.62 | 20.26 | |
Some college or AA degree | 31.57 | 31.72 | 31.09 | 32.25 | |
College graduate or above | 31.31 | 31.59 | 30.86 | 30.35 | |
Marital, N (%) | < 0.0001 | ||||
Married | 53.77 | 57.91 | 55.03 | 58.21 | |
Widowed | 3.39 | 2.64 | 3.30 | 3.04 | |
Divorced | 9.37 | 11.51 | 11.76 | 10.24 | |
Separated | 1.90 | 2.21 | 2.41 | 2.53 | |
Never married | 23.30 | 19.11 | 17.88 | 17.38 | |
Living with partner | 8.26 | 6.63 | 9.62 | 8.60 | |
Smoking status, N (%) | < 0.0001 | ||||
Yes | 42.37 | 43.20 | 48.07 | 48.23 | |
No | 57.63 | 56.80 | 51.93 | 51.77 | |
Alcohol consumption, N (%) | 0.1032 | ||||
Yes | 79.65 | 80.96 | 80.92 | 82.42 | |
No | 20.35 | 19.04 | 19.08 | 17.58 | |
PIR | 3.05 ± 1.67 | 3.17 ± 1.64 | 3.09 ± 1.64 | 3.11 ± 1.66 | 0.0693 |
PIR | 0.3143 | ||||
<=1.3 | 21.20 | 18.86 | 20.54 | 19.94 | |
> 1.3, <=3.5 | 33.95 | 33.38 | 34.32 | 34.13 | |
> 3.5 | 44.85 | 47.77 | 45.14 | 45.93 | |
BMI, kg/m2 | 27.81 ± 6.13 | 28.74 ± 6.79 | 29.19 ± 6.66 | 29.05 ± 6.55 | < 0.0001 |
BMI, kg/m2 | < 0.0001 | ||||
< 18.5 | 1.59 | 1.62 | 0.82 | 1.40 | |
>=18.5, < 25 | 35.54 | 30.52 | 26.25 | 26.44 | |
>=25, < 30 | 33.27 | 33.07 | 34.61 | 35.88 | |
>=30 | 29.60 | 34.80 | 38.33 | 36.28 | |
FENO, ppb | 13.69 ± 9.12 | 15.14 ± 11.49 | 16.92 ± 13.57 | 21.66 ± 21.22 | < 0.0001 |
FVC, mL | 4190.58 ± 1093.88 | 4189.32 ± 1050.45 | 4168.99 ± 1087.43 | 4150.43 ± 1087.53 | 0.5099 |
FEV1, mL | 3319.38 ± 902.59 | 3268.24 ± 870.10 | 3240.30 ± 898.71 | 3187.63 ± 905.88 | < 0.0001 |
PEF, mL/s | 8421.32 ± 2157.86 | 8386.08 ± 2170.01 | 8419.07 ± 2156.69 | 8287.87 ± 2272.44 | 0.1120 |
FEF25%-75%, mL/s | 3221.18 ± 1298.91 | 3048.99 ± 1282.15 | 3007.18 ± 1300.81 | 2878.26 ± 1290.31 | < 0.0001 |
FEV1/FVC% | 79.28 ± 7.71 | 78.03 ± 7.65 | 77.73 ± 8.04 | 76.75 ± 8.81 | < 0.0001 |
NPAR | 24.43 ± 7.52 | 44.82 ± 5.59 | 68.56 ± 8.32 | 128.74 ± 51.95 | < 0.0001 |
Albumin, g/dL | 4.37 ± 0.34 | 4.31 ± 0.32 | 4.29 ± 0.32 | 4.23 ± 0.32 | < 0.0001 |
Neutrophil, 1000 cells/uL | 4.74 ± 1.88 | 4.34 ± 1.60 | 4.12 ± 1.52 | 3.80 ± 1.57 | < 0.0001 |
Neutrophil % | 1.07 ± 0.34 | 1.93 ± 0.28 | 2.94 ± 0.41 | 5.43 ± 2.18 | < 0.0001 |
Monocyte, 1000 cells/uL | 0.54 ± 0.26 | 0.54 ± 0.17 | 0.53 ± 0.18 | 0.54 ± 0.17 | 0.4995 |
Lymphocyte, 1000 cells/uL | 2.13 ± 0.92 | 2.13 ± 0.68 | 2.10 ± 0.66 | 2.05 ± 0.65 | < 0.0001 |
Platelet, 1000 cells/uL | 248.15 ± 62.44 | 251.29 ± 63.19 | 248.48 ± 64.44 | 247.62 ± 61.32 | 0.1555 |
High density lipoprotein, mg/dL | 54.76 ± 16.25 | 52.74 ± 16.39 | 51.25 ± 14.79 | 51.81 ± 15.58 | < 0.0001 |
Hypertension, N (%) | < 0.0001 | ||||
Yes | 22.49 | 24.91 | 30.89 | 30.11 | |
No | 77.51 | 75.09 | 69.11 | 69.89 | |
Diabetes, N (%) | 0.0011 | ||||
Yes | 5.81 | 7.15 | 7.57 | 8.75 | |
No | 94.19 | 92.85 | 92.43 | 91.25 | |