|
Months after baseline |
FDCS stage | Completion date | Number of participants (unweighted numbers **) |
| -- | Sample development | May, 1993 | 3,998 potential dentate participants identified |
| 0 | Baseline interview & clinical exam | May, 1994 | 873 participants interviewed & examined (a stratified random sample was taken of the 3,998) |
| 6 | Telephone interview | November, 1994 | 849 participants (97% of baseline) |
| 12 | Telephone interview | May, 1995 | 819 participants (94% of baseline) |
| 18 | Telephone interview | November, 1995 | 805 participants (92% of baseline) |
| 24 | In-person interview & clinical exam | May, 1996 | 764 participants (88% of baseline) |
| 30 | Telephone interview | November, 1996 | 748 participants (86% of baseline) |
| 36 | Telephone interview | May, 1997 | 738 participants (85% of baseline) |
| 42 | Telephone interview | November, 1997 | 724 participants (83% of baseline) |
| 48 | In-person interview & clinical exam | May, 1998 | 714 participants (82% of baseline) |
| 54 | Telephone interview | November, 1998 | 703 participants (81% of baseline) |
| 60 | Telephone interview | May, 1999 | 692 participants (79% of baseline) |
| 66 | Telephone interview | November, 1999 | 680 participants (78% of baseline) |
| 72 | In-person interview & clinical exam | May, 2000 | 665 participants (76% of baseline) |
** The FDCS used
a disproportionate stratified random sample. Therefore, although the
weighted and
unweighted sample sizes at baseline were both 873, the weighted and unweighted
values post-baseline
do differ somewhat due to differential attrition across strata.
These were the 6-monthly participation/non-participation unweighted distributions:
Time point
Deceased Medically unable
Participated Refused Unreachable
Total
6 months
9
3
849
4
8
873
12 months
18
4
819
7
25
873
18 months
23
6
805
12
27
873
24 months
29
10
764
35
35
873
30 months
36
15
748
38
36
873
36 months
42
16
738
40
37
873
42 months
52
16
724
40
41
873
48 months
60
15
714
40
44
873
54 months
65
18
703
44
43
873
60 months
72
19
692
44
46
873
66 months
83
19
680
44
47
873
72 months
92
20
665
46
50
873
We gathered successfully
these types of self-reported and clinical data on our FDCS
participants:
| Oral health outcomes measured by clinical examination | Self-reported oral health outcomes | Subjects’ predisposing and enabling characteristics | Subjects’ reported dental care use |
|
Coronal and root caries
Root surface abrasions |
Dental/oral signs & symptoms
Chewing ability |
Age, area of residence, race, education level | Specific dental services used |
|
Bulk restoration fractures
Cusp fractures |
Speech interference
Psychosocial impacts |
Satisfaction with dental care
Negative aspects of dental care |
Dates and reasons for dental visits |
| Periodontal attachment loss | Perceived oral health | Importance of dental visits | |
|
Tooth mobility
Tooth loss |
Satisfaction with oral health |
Value/effectiveness of dental care
Value of teeth |
|
| Oral hygiene behavior | |||
| Household income | |||
| Present financial situation | |||
| Dental insurance |