Biomaterial Database

Empirical verification of confidence intervals computed from dental data. 1982

M E Cohen, and J C Cecil

Sampling experiments were conducted on five distributions of dental epidemiological data which varied in degree of positive skew. The tendency of nominal confidence intervals to be underestimated and asymmetric in the two tails increased with skew and decreased with increasing sample size. The findings conform to theoretical expectations and demonstrate the importance of the normality assumption regarding sampling distributions. A rule is presented which identifies a sample size so that the 95% confidence probability statement would be incorrect no more than 6% of the time.

UI	MeSH Term	Description	Entries
D011336	Probability	The study of chance processes or the relative frequency characterizing a chance process.	Probabilities
D003731	Dental Caries	Localized destruction of the tooth surface initiated by decalcification of the enamel followed by enzymatic lysis of organic structures and leading to cavity formation. If left unchecked, the cavity may penetrate the enamel and dentin and reach the pulp.	Caries, Dental,Carious Lesions,Dental Cavities,Dental Cavity,Dental Decay,Dental White Spots,Carious Dentin,Decay, Dental,Dental White Spot,White Spot, Dental,White Spots, Dental,Carious Dentins,Carious Lesion,Cavities, Dental,Cavity, Dental,Dentin, Carious,Dentins, Carious,Lesion, Carious,Lesions, Carious,Spot, Dental White,Spots, Dental White
D003753	Dental Health Surveys	A systematic collection of factual data pertaining to dental or oral health and disease in a human population within a given geographic area.	Dental Health Survey,Health Survey, Dental,Health Surveys, Dental,Survey, Dental Health,Surveys, Dental Health
D004245	DMF Index	"Decayed, missing and filled teeth," a routinely used statistical concept in dentistry.	Decayed, Missing, and Filled Teeth,DMF Indexes,DMF Indexe,DMF Indices,Index, DMF,Indexe, DMF,Indexes, DMF,Indices, DMF
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012494	Sampling Studies	Studies in which a number of subjects are selected from all subjects in a defined population. Conclusions based on sample results may be attributed only to the population sampled.	Probability Sample,Probability Samples,Sample, Probability,Samples, Probability,Sampling Study,Studies, Sampling,Study, Sampling
D013223	Statistics as Topic	Works about the science and art of collecting, summarizing, and analyzing data that are subject to random variation.	Area Analysis,Estimation Technics,Estimation Techniques,Indirect Estimation Technics,Indirect Estimation Techniques,Multiple Classification Analysis,Service Statistics,Statistical Study,Statistics, Service,Tables and Charts as Topic,Analyses, Area,Analyses, Multiple Classification,Area Analyses,Classification Analyses, Multiple,Classification Analysis, Multiple,Estimation Technic, Indirect,Estimation Technics, Indirect,Estimation Technique,Estimation Technique, Indirect,Estimation Techniques, Indirect,Indirect Estimation Technic,Indirect Estimation Technique,Multiple Classification Analyses,Statistical Studies,Studies, Statistical,Study, Statistical,Technic, Indirect Estimation,Technics, Estimation,Technics, Indirect Estimation,Technique, Estimation,Technique, Indirect Estimation,Techniques, Estimation,Techniques, Indirect Estimation