… Table 2 – Associations between periodontitis and RA in case-control studies ...... 24 `Table
3 -The main methodologies used in qualitative research ........................... 27 Table 4 - …

… , such as dental caries and periodontal disease, may impact … , controlled trial and case-control.
The instrument comprises 6 … Exclusion reason for non-participation: absence from school …

… In an early clinical study, patients were requited from a private clinic and had a history of
periodontal disease. Following periodontal treatment of all anterior teeth, two implants were …

… reasons for non-eligibility and non-participation of eligible women has been … periodontitis.
Practical implications drawn from this study can be applied to other studies in similar settings. …

… , multiple sclerosis, and periodontitis exposure have an increased … result, the inability to fully
adjust for potential confounders or … A disadvantage of case-control studies is the reliance on …

… Reasons for non-participation in first round of recruitment (… Previous cohort and case-control
studies have indicated a … association between periodontitis and CHD/CVD in studies with a …

… Within this case-control study we will identify the possible risk … calibration prior to initiation of
a subsequent research study. A … recall we can reduce recall bias (Rothman KJ, 2002). Recall …

… The main reasons for non-participation among the cancer … that opium use is associated with
periodontal disease. … , then we would have a selection bias. Therefore, we should be careful …

… a wide spectrum of health care settings. The implementation of … , case-control studies, cohort
studies, and cross-sectional … ) workers in a company Periodontal health assessment (perio …

… Table 3.7a Adjusted mean levels of periodontal disease indices at age 85 by quartiles of …
Epidemiological studies Nine cross-sectional and three case-control studies are presented …