Participant Experiences in the Environmental Determinants of Diabetes in the Young Study: Common Reasons for Withdrawing
Table 3
Frequency of common reasons for withdrawing from the TEDDY study during the first three study years. Percentages for reasons mentioned more frequently are shown.
Withdrawals
Last visit before withdrawal (month)
Year 1
Year 1
Year 2
Year 3
All
3–6 m
9–12 m
15–24 m
27–36 m
3–36 m
(row %)
(row %)
(row %)
(row %)
%
Active withdrawals (AW)
584 (37.7)
324 (20.9)
431 (27.8)
210 (13.6)
1549
73.4
Reasons for withdrawal
Protocol characteristics
244 (37.4)
128 (19.6)
195 (29.9)
86 (13.2)
653
100
Concerns about blood draw
124 (34.5)
63 (17.5)
112 (31.2)
60 (16.7)
359
55.0a
Protocol too demanding
68 (40.0)
41 (24.1)
43 (25.3)
18 (10.6)
170
26.0a
Transportation difficulties
44 (41.1)
21 (19.6)
35 (32.7)
7 (6.5)
107
16.4
Concerns about frequency of visits
40 (39.2)
20 (19.6)
33 (32.4)
9 (8.8)
102
15.6
Concerns about stool samples
14
9
13
7
43
6.6
Concerns about questionnaires
15
8
10
4
37
5.7
Food diaries too troublesome
12
1
2
1
34
5.2
Do not want to be reminded of risk
19
6
5
1
31
4.7
Duration of study is too long
1
3
5
1
10
1.5
No treatment to prevent offered
3
1
2
1
7
1.1
Worried about privacy
1
1
0
0
2
—
Worried about loss of insurance
3
0
0
0
3
—
Other protocol characteristics
2
3
5
2
12
1.8
Family factors
279 (35.6)
162 (20.7)
231 (29.5)
112 (14.3)
784
100
Too busy/not enough time
187 (31.9)
134 (22.8)
185 (31.5)
81 (13.8)
587
66.6a
Feeling overwhelmed/stressed
82 (39.8)
40 (19.4)
58 (28.2)
26 (12.6)
206
23.4
Moving out of the study area
33 (30.4)
23 (23.7)
22 (22.7)
19 (19.6)
97
11.0
Child medical/behavioral problems
29 (40.3)
16 (22.2)
16 (22.7)
11 (19.6)
72
8.2
Family member emotional problems
15
9
18
10
52
5.9
Does not want to be in research
9
3
8
5
25
2.8
Family member does not agree to participate
8
0
5
4
17
1.9
Family member in another study
1
0
2
0
3
—
Subject already in another study
0
1
0
0
1
—
Fam. health care provider not recommended
1
0
0
0
1
—
Language barrier
1
0
0
0
1
—
Other family factors
4
2
4
3
13
1.5
Active contact made but no reason given or wants to wait and see
70 (42.4)
28 (17.0)
42 (25.4)
25 (15.2)
165
10.7
Significant difference between age groups: concerns about blood draw (), do not want to be reminded of risk (), and too busy/not enough time ().
