Clifford L Johnson
Biographic Data
| ID | 5457859 |
|---|---|
| NAME | Clifford L Johnson |
| GIVEN NAMES | Clifford L |
| FAMILY NAME | Johnson |
| SIGNATURE | JOHNSON C L |
| AFFILIATIONS | National Center for Health Statistics |
| VERIFIED | No |
| TOTAL WORKS | 5 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 5 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 1999 |
| LATEST PUBLICATION YEAR | 2016 |
| H-INDEX | 0 |
Update on NHANES Dietary Data
Centers for Disease Control and Prevention 2000 Growth Charts for the United States
Objective. To present a clinical version of the 2000 Centers for Disease Control and Prevention (CDC) growth charts and to compare them with the previous version, the 1977 National Center for Health Statistics (NCHS) growth charts. Methods. The 2000 CDC percentile curves were developed in 2 stages. In the first stage, the empirical percentiles were smoothed by a variety of parametric and nonparametric procedures. To obtain corresponding percentil…
Statistical effects of varying sample sizes on the precision of percentile estimates
The present study evaluates the precision of outlying percentile estimates, with age- and sex-associated variations and facilitates decisions needed to revise the current NCHS 1977 Growth Charts with regard to 1) the inclusion of 3rd and 97th percentiles and 2) the selection of survey data for the construction of the revised growth charts. Simulation was performed to obtain data with distribution characteristics similar to those of The Third Nati…
Statistical effects of varying sample sizes on the precision of percentile estimates
The present study evaluates the precision of outlying percentile estimates, with age- and sex-associated variations and facilitates decisions needed to revise the current NCHS 1977 Growth Charts with regard to 1) the inclusion of 3(rd) and 97(th) percentiles and 2) the selection of survey data for the construction of the revised growth charts. Simulation was performed to obtain data with distribution characteristics similar to those of The Third …
Periodontal Disease Estimates in NHANES III
Objective : This paper evaluates the possibility that examiner bias or other factors contributed to an observed decline in pocket depth and gingivitis between the two three‐year sequential periods of time (or phases) covered by the Third National Health and Nutrition Examination Survey (NHANES III). Methods : Prevalences of periodontal conditions were analyzed using data from two sets of repeat oral health examinations by examining dentists of NH…
No prominent works on this page.
Periodontal Disease Estimates in NHANES III
Objective : This paper evaluates the possibility that examiner bias or other factors contributed to an observed decline in pocket depth and gingivitis between the two three‐year sequential periods of time (or phases) covered by the Third National Health and Nutrition Examination Survey (NHANES III). Methods : Prevalences of periodontal conditions were analyzed using data from two sets of repeat oral health examinations by examining dentists of NH…
Statistical effects of varying sample sizes on the precision of percentile estimates
The present study evaluates the precision of outlying percentile estimates, with age- and sex-associated variations and facilitates decisions needed to revise the current NCHS 1977 Growth Charts with regard to 1) the inclusion of 3rd and 97th percentiles and 2) the selection of survey data for the construction of the revised growth charts. Simulation was performed to obtain data with distribution characteristics similar to those of The Third Nati…
Statistical effects of varying sample sizes on the precision of percentile estimates
The present study evaluates the precision of outlying percentile estimates, with age- and sex-associated variations and facilitates decisions needed to revise the current NCHS 1977 Growth Charts with regard to 1) the inclusion of 3(rd) and 97(th) percentiles and 2) the selection of survey data for the construction of the revised growth charts. Simulation was performed to obtain data with distribution characteristics similar to those of The Third …
Centers for Disease Control and Prevention 2000 Growth Charts for the United States
Objective. To present a clinical version of the 2000 Centers for Disease Control and Prevention (CDC) growth charts and to compare them with the previous version, the 1977 National Center for Health Statistics (NCHS) growth charts. Methods. The 2000 CDC percentile curves were developed in 2 stages. In the first stage, the empirical percentiles were smoothed by a variety of parametric and nonparametric procedures. To obtain corresponding percentil…
Update on NHANES Dietary Data
Environmental health (5 works) · Mathematics (5 works) · Medicine (5 works) · Population (5 works) · Statistics (5 works) · National Health and Nutrition Examination Survey (4 works) · Body mass index (3 works) · Demography (3 works) · Health statistics (3 works) · Percentile (3 works)