| Type: | Package | 
| Title: | Asthma Data Sets from NHANES | 
| Version: | 1.1.0 | 
| Maintainer: | Tao Sun <sun.tao@ruc.edu.cn> | 
| Description: | Data sets and examples from National Health and Nutritional Examination Survey (NHANES). | 
| License: | GPL-3 | 
| Depends: | R (≥ 3.5.0) | 
| Repository: | CRAN | 
| Date: | 2021-04-11 05:00:09 UTC | 
| NeedsCompilation: | no | 
| Packaged: | 2021-04-11 14:59:16 UTC; Lenovo | 
| Author: | Tao Sun [aut, cre], Qiyao Qin [aut], Zihan Qian [aut], Yang Li [aut] | 
| Date/Publication: | 2021-04-13 14:00:02 UTC | 
Asthma Data Sets from National Health and Nutritional Examination Survey (NHANES)
Description
This package provides two datasets (metal and percent) that are related to the work of "Serum cadmium and lead, current wheeze, and lung function in a nationwide study of adults in the United States" (Journal of Allergy and Clinical Immunology: In Practice, DOI:10.1016/j.jai-p.2019.05.029).
Author(s)
- Tao Sun 
- Qiyao Qin 
- Zihan Qian 
- Yang Li 
Source
Centers for Disease Control and Prevention (CDC). National Center for Health Statistics (NCHS). National Health and Nutrition Examination Survey Data. Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, [2021][https://www.cdc.gov/nchs/nhanes/].
metal
Description
The metal data frame has 30,442 rows and 27 columns.
Usage
data(metal)
Format
This data frame contains the following columns:
- RIAGENDR
- Gender of the sample person 
- RIDAGEYR
- Best age in years of the sample person at time of screening 
- RIDRETH1
- Recode of reported race and ethnicity information 
- WTMEC5YR
- Both interviewed and MEC examined sample persons 
- SDMVPSU
- Masked Variance Unit Pseudo-PSU variable for variance estimation 
- SDMVSTRA
- Masked variance unit pseudo-stratum variable for variance estimation 
- BMXBMI
- Body mass index (kg/m^2) 
- LBXBPB
- Lead (ug/dL) 
- LBXBCD
- Cadmium (ug/L) 
- LBXCOT
- Cotinine (ng/mL) 
- MCQ010
- Ever been told you have asthma 
- RDQ070
- Wheezing or whistling in chest - past year 
- SMQ040
- Do you now smoke cigarettes? 
- SMQ020
- Smoked at least 100 cigarettes in life 
- MCQ035
- Still have asthma? 
- OCD390G
- Kind of work you have done the longest 
- HIQ011
- Covered by health insurance 
- MCQ300B
- Close relative had asthma? 
- INDHHIN2
- Annual household income 
- ENQ090
- Close relative had asthma? 
- ENXTR1Q
- Trial 1 FENO measurement (ppb) 
- SPXNFVC
- Baseline 1st test spirometry, forced vital capacity 
- SPXNFEV1
- Baseline 1st test spirometry, forced expiratory volume in the first 1 second 
- SPDBRONC
- Best test FEV1/FVC ratio below Lower Limit of Normal and/or less than 0.7 
- SPXBFVC
- Bronchodilator 2nd test spirometry, forced vital capacity 
- SPXBFEV1
- Bronchodilator 2nd test spirometry, forced expiratory volume in the first 1 second 
- LBXVIDMS
- 25-hydroxyvitamin D2 and D3 
Source
Centers for Disease Control and Prevention (CDC). National Center for Health Statistics (NCHS). National Health and Nutrition Examination Survey Data. Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, [2021][https://www.cdc.gov/nchs/nhanes/].
Examples
# Load data
data(metal)
# View data
summary(metal)
percent
Description
The percent data frame has 40,979 rows and 6 columns.
Usage
data(percent)
Format
This data frame contains the following columns:
- FEV1FVC_percent_predicted
- Percent predicted FEV1/FVC 
- FEV1FVC_z_score
- Z score of FEV1/FVC 
- FEV1_percent_predicted
- Percent predicted FEV1 
- FEV1_z_score
- Z score of FEV1 
- FVC_percent_predicted
- Percent predicted FVC 
- FVC_z_score
- Z score of FVC 
Source
Centers for Disease Control and Prevention (CDC). National Center for Health Statistics (NCHS). National Health and Nutrition Examination Survey Data. Hyattsville, MD: U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, [2021][https://www.cdc.gov/nchs/nhanes/].
Examples
# Load data
data(percent)
# View data
summary(percent)