東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back to Search results for [ null ]

Switch To: Labeled | MARC Mode | ISBD

Methodological considerations in the...

Araujo, Marcelo Werneck Barata de.

Linked to FindBook

Google Book

Amazon

博客來

Methodological considerations in the evaluation of periodontal disease and their impact on the exploration of its link with other diseases.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Methodological considerations in the evaluation of periodontal disease and their impact on the exploration of its link with other diseases./
Author:	Araujo, Marcelo Werneck Barata de.
Description:	125 p.
Notes:	Source: Dissertation Abstracts International, Volume: 64-08, Section: B, page: 3728.
Contained By:	Dissertation Abstracts International64-08B.
Subject:	Health Sciences, Dentistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3102343
ISBN:	0496499134

Methodological considerations in the evaluation of periodontal disease and their impact on the exploration of its link with other diseases.
Araujo, Marcelo Werneck Barata de.

Methodological considerations in the evaluation of periodontal disease and their impact on the exploration of its link with other diseases. - 125 p.

Source: Dissertation Abstracts International, Volume: 64-08, Section: B, page: 3728.

Thesis (Ph.D.)--State University of New York at Buffalo, 2003.

Inaccuracies in data collection may lead to misclassification of disease. In periodontal disease research, methodological issues may affect our ability to characterize individuals concerning their periodontal status. The goals of this study were to characterize measurement variability in periodontal probing within and between examiners, and to demonstrate the impact of missing teeth on periodontal probing depth (PPD), clinical attachment loss (CAL), and alveolar crestal height (ACH), recorded using four periodontal indices. Aim 1 examined the intra- and inter-examiner variability. Three examiners collected PPD data from 20 individuals from one quadrant, on three different occasions, twice by each examiner. Standard of error of measurement (s.e.m.) was calculated to determine intra- and inter-examiner variability at the tooth and quadrant levels. All examiners provided reproducible measures under 0.5mm, and reproducibility did not vary when using quadrant or tooth mean. Intra-examiner variability was 0.40mm +/- 0.02 at the quadrant level, and 0.38mm +/- 0.07 at the tooth level. Inter-examiner variability at the quadrant level was 0.16mm +/- 0.02, and 0.24mm +/- 0.05 at the tooth level. Percentage of error at the quadrant level ranged from 6.5% to 19.5%, and at the tooth, from 6.6% to 23.9%. The estimated ratios between intra- and inter-individual variance at the quadrant level, ranged from 0.505 to 2.02. Aims 2 and 3 involved analyses of 759 individuals to determine the impact of missing teeth on misclassification of periodontal disease, measured by PPD, CAL and ACH, assessed by whole-mouth and three partial-mouth methods. Arbitrary values of PPD, CAL, and ACH were assigned to missing teeth, assuming the teeth were lost to periodontal disease. For whole-mouth method, we observed that an increase in numbers of missing teeth and disease severity led to an increase in misclassification (0%--38.9%), though lower for ACH than for PPD and CAL. Our results indicate that partial-mouth methods were highly correlated to whole-mouth method. However, partial-mouth indices may underestimate disease prevalence, regardless of the periodontal measure. In conclusion, misclassification of individuals was higher for all three partial-mouth methods compared to the whole-mouth method.

ISBN: 0496499134Subjects--Topical Terms:

1019378
Health Sciences, Dentistry.

Methodological considerations in the evaluation of periodontal disease and their impact on the exploration of its link with other diseases.
LDR:03272nmm 2200277 4500 001 1836792
005 20050315121045.5
008 130614s2003 eng d
020 $a 0496499134
035 $a (UnM)AAI3102343
035 $a AAI3102343
040 $a UnM $c UnM
100 1 $a Araujo, Marcelo Werneck Barata de. $3 1925258
245 1 0 $a Methodological considerations in the evaluation of periodontal disease and their impact on the exploration of its link with other diseases.
300 $a 125 p.
500 $a Source: Dissertation Abstracts International, Volume: 64-08, Section: B, page: 3728.
500 $a Adviser: Maurizio Trevisan.
502 $a Thesis (Ph.D.)--State University of New York at Buffalo, 2003.
520 $a Inaccuracies in data collection may lead to misclassification of disease. In periodontal disease research, methodological issues may affect our ability to characterize individuals concerning their periodontal status. The goals of this study were to characterize measurement variability in periodontal probing within and between examiners, and to demonstrate the impact of missing teeth on periodontal probing depth (PPD), clinical attachment loss (CAL), and alveolar crestal height (ACH), recorded using four periodontal indices. Aim 1 examined the intra- and inter-examiner variability. Three examiners collected PPD data from 20 individuals from one quadrant, on three different occasions, twice by each examiner. Standard of error of measurement (s.e.m.) was calculated to determine intra- and inter-examiner variability at the tooth and quadrant levels. All examiners provided reproducible measures under 0.5mm, and reproducibility did not vary when using quadrant or tooth mean. Intra-examiner variability was 0.40mm +/- 0.02 at the quadrant level, and 0.38mm +/- 0.07 at the tooth level. Inter-examiner variability at the quadrant level was 0.16mm +/- 0.02, and 0.24mm +/- 0.05 at the tooth level. Percentage of error at the quadrant level ranged from 6.5% to 19.5%, and at the tooth, from 6.6% to 23.9%. The estimated ratios between intra- and inter-individual variance at the quadrant level, ranged from 0.505 to 2.02. Aims 2 and 3 involved analyses of 759 individuals to determine the impact of missing teeth on misclassification of periodontal disease, measured by PPD, CAL and ACH, assessed by whole-mouth and three partial-mouth methods. Arbitrary values of PPD, CAL, and ACH were assigned to missing teeth, assuming the teeth were lost to periodontal disease. For whole-mouth method, we observed that an increase in numbers of missing teeth and disease severity led to an increase in misclassification (0%--38.9%), though lower for ACH than for PPD and CAL. Our results indicate that partial-mouth methods were highly correlated to whole-mouth method. However, partial-mouth indices may underestimate disease prevalence, regardless of the periodontal measure. In conclusion, misclassification of individuals was higher for all three partial-mouth methods compared to the whole-mouth method.
590 $a School code: 0656.
650 4 $a Health Sciences, Dentistry. $3 1019378
650 4 $a Health Sciences, Public Health. $3 1017659
690 $a 0567
690 $a 0573
710 2 0 $a State University of New York at Buffalo. $3 1017814
773 0 $t Dissertation Abstracts International $g 64-08B.
790 1 0 $a Trevisan, Maurizio, $e advisor
790 $a 0656
791 $a Ph.D.
792 $a 2003
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3102343