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. Author manuscript; available in PMC: 2023 Sep 10.
Published in final edited form as: Sci Total Environ. 2022 Jun 2;838(Pt 3):156434. doi: 10.1016/j.scitotenv.2022.156434

Table 1.

Descriptive characteristics of Normative Aging Study (NAS) cohort for the study period (2000–2017).

Visit 1 (Baseline) All visits
Total observations (n) 726 2075
Characteristics n (%) or Mean ± SD n (%) or Mean ± SD
Race (%White) 706 (98.1) 2012 (97.9)
Current Smoker 32 (4.4) 79 (3.8)
Former Smoker 467 (64.5) 1340 (64.7)
Never Smoker 225 (31.1) 652 (31.5)
Alcohol (>2 drinks daily) 134 (18.5) 369 (17.8)
Coronary heart disease 216 (29.8) 751 (36.2)
Stroke 52 (7.2) 171 (8.2)
Diabetes 97 (13.4) 337 (16.2)
Corticosteroids 48 (6.7) 101 (6.8)
Beta blocker 261 (35.9) 851 (41.0)
Chronic Pulmonary Diseasesa 132 (18.3) 346 (18.7)
FVC (L) 3.35 ± 0.67 3.42 ± 0.70
%-Predicted FVC 94.29 ± 16.16 95.20 ± 15.80
FEV1 (L) 2.51 ± 0.58 2.53 ± 0.59
%-Predicted FEV1 92.65 ± 18.50 93.75 ± 17.88
FEV1/FVC (%) 75.0 ± 8.00 73.0 ± 8.00
Age (y) 73.2 ± 6.90 76.7 ± 7.10
Height (in) 68.5 ± 2.70 68.3 ± 2.80
BMI (kg/m2) 28.1 ± 4.00 27.9 ± 4.00
Cumulative smoking (pack-years) 21.0 ± 25.40 28.0 ± 22.80

SD (standard deviation); FVC (forced vital capacity); FEV1(forced expiratory volume at 1 s); BMI (body mass index).

a

Physician diagnosed asthma, emphysema, or chronic bronchitis.