Community Quiz #4

All existing cases at a given point in time (viewed as a %)

Individuals genetic or social factors that contribute to the persons susceptibility

Dental Caries Examination: All tests, least commonly used in public health and not required for epidemiologic studies.

DMFS =

Include incubation periods, life expectancy, duration of the course of an illness or condition & severity of the illness

Procedure of DMFT

DMFT =

Every possible subject is selected independently and has an equal chance of being selected.

Purpose of sulcular bleeding index (SBI)

Purpose of Plaque Index (PL I)

New cases of a disease or condition over a given time period or its progress over time

Reliability: Before DHs conduct oral exams they have to agree on methods of data collection

Determine the meaning of past events by reviewing records and literature and conducting interviews.

Epidemic that crosses international borders to affect several countries or continents- EX:(HIV/ Flu)

Breaking a sample into populations. You select proportionate # of subjects from the random sample

Dental Caries Examination:Most basic, least comprehensive, uses tongue depressor and illumination. Many False negatives.

Procedure of ginigival bleeding index (GBI)

Purpose of DMFT

Scoring of Gingival bleeding index (GBI)

Characteristics of a Dental Index: Index measures what is intended to measure

Constant presence of a disease -EX:(Malaria in tropical country)

Scoring of OHI-S

Dental Indexes: Measures all the evidence of a condition (both past and present) EX: DMFT Index for dental caries

Dental Caries Examination: Use of mouth mirror, explorer, illumination, posterior BWX, and selected PAs.

No statistically significant difference exist between brand X and a placebo when comparing the ability to whiten teeth

Measure & describe the presence & distribution of disease in a population or sample at one point in time.

The variable that is being tested, the response that is measured Determined by one or more variables.

Puprose of Gingival Bleeding Index (GBI)

Selection of subjects by including very nth person in a list. Creates bias

Scoring of Plaque Index (PL I)

Scoring for Sulcular bleeding index (SBI)

Procedure of Sulcular bleeding index (SBI)

Indexes:Measure the presence or absence of a condition EX: Measures presence of biofilm w/o evaluating effect on gingiva

Death rate resulting from a specific disease or condition(die from)

Looks at a group of people with the disease in the past or present. Looks backward.

Version of the proposed study, small sometimes intentional sample population

Dental Caries Examination: Most common type used and employs a mirror, explorer, and illumination.

Dental Indexes: Measures conditions that CAN be resolved or reversed EX: Gingivitis indices or measurement of biofilm

Characteristics of a Dental Index: Results are not subject to individual interpretation

Neither the subject nor the investigators know whose in control group & whose in other group that receives experiment

Characteristics of a Dental Index: Examiner consistency and calibration are reproducible

Procedure of OHI-S

Characteristics of a Dental Index: Results are easily measured

Biologic or mechanical cause of disease or condition

Most comprehensive dental caries examination

Measures over time

Dental Indexes: Measures cumulative conditions that CANNOT be resolved EX: Caries and periodontal disease

Extent of disease, injury, or disability in a pop.(Diagnosed)

Physical, social, sociocultural, sociopolitical & economic circumstances required of disease to thrive, survive & spread

Brand X significantly whitens teeth

Purpose of OHI-S

Procedure of Plaque Index (PL I)

Disease occurrence in excess of normal “outbreak” -EX:(SARS)

Scoring of DMFT

A group of individuals who are most readily available to subjects. Introduce bias. Simplest method.

Reliability: Increases reliability by practicing working together beforehand

A TX or drug, or an educational component whose value may change over the course of a research study.

Someone familiar with the population selects the sample. High chance of Bias

The variable that is being manipulated by the researcher.