|
Table C1. Estimates of Compliance with Criteria and Associated Elements of Disclosure, All Health Websites
|
|
All Health
Websites
|
|
Criterion/Disclosure
Element
|
Number
(n=102)
|
Percent
|
SE
|
RSE (%)
|
Lower bound
95% CI
|
Upper bound
95% CI
|
|
Identity
|
12
|
8.5
|
3.59
|
42.19
|
3.6
|
18.9
|
|
Name
|
91
|
91.6
|
3.59
|
3.92
|
81.2
|
96.5
|
|
Street
address
|
61
|
54.8
|
6.59
|
12.03
|
41.7
|
67.3
|
|
Funding sources
|
22
|
20.2
|
5.29
|
26.18
|
11.7
|
32.7
|
|
Purpose
|
44
|
35.2
|
6.27
|
17.79
|
24.0
|
48.4
|
|
Purpose
or mission
|
67
|
64.3
|
6.35
|
9.88
|
50.9
|
75.7
|
|
Uses and
limitations
|
79
|
71.0
|
6.05
|
8.52
|
57.8
|
81.5
|
|
Association with commercial products
|
67
|
60.8
|
6.48
|
10.66
|
47.5
|
72.7
|
|
Content
|
2
|
0.3
|
0.16
|
59.26
|
0.1
|
0.9
|
|
Identify
advertising content
|
82
|
74.9
|
5.80
|
7.75
|
61.8
|
84.6
|
|
Describe
editorial policy
|
12
|
5.1
|
2.61
|
51.58
|
1.8
|
13.5
|
|
Authorshipa
|
21
|
11.4
|
3.98
|
34.79
|
5.6
|
22.0
|
|
Privacy
|
85
|
75.3
|
5.79
|
7.69
|
62.1
|
85.0
|
|
Privacy
policy
|
88
|
79.1
|
5.47
|
6.91
|
66.3
|
88.0
|
|
Describe protection of personal information
|
85
|
75.3
|
5.79
|
7.69
|
62.1
|
85.0
|
|
User Feedback
|
65
|
58.8
|
6.52
|
11.09
|
45.5
|
70.9
|
|
Feedback mechanism
|
65
|
58.8
|
6.52
|
11.09
|
45.5
|
70.9
|
|
Content Updating
|
1
|
0.1
|
0.12
|
92.31
|
0.02
|
0.8
|
|
Display
date createda
|
8
|
4.5
|
2.60
|
57.52
|
1.4
|
13.5
|
|
Display date reviewed or updateda
|
11
|
3.2
|
1.88
|
58.75
|
1.0
|
9.9
|
|
Source:
|
Computations by Mathematica Policy Research, Inc.
|
|
Note:
|
Number=number of websites in sample found compliant
Percent=weighted percent of all websites estimated to be in compliance
SE= standard error of weighted percentage estimate
RSE=relative standard error (the standard error divided by the percentage estimate)
CI=confidence interval of weighted percentage estimate
Shading indicates estimates that are unreliable, due to large standard error relative to small percentage estimates.
|
|
aThis criterion element must be fulfilled for all three pages of health content evaluated.
|
|
Table C2. Estimates of Compliance with Criteria and Associated Elements of Disclosure, by Stratum
|
|
Frequently Visited Sites
|
|
Remainder Sites
|
|
Criterion/Disclosure Element
|
Number (n=52)
|
Percent
|
SE
|
RSE (%)
|
Lower bound 95% CI
|
Upper bound 95% CI
|
|
Number (n=50)
|
Percent
|
SE
|
RSE (%)
|
Lower bound 95% CI
|
Upper bound 95% CI
|
|
Identity
|
8
|
15.4
|
4.39
|
28.54
|
8.5
|
26.2
|
|
4
|
8.0
|
3.85
|
48.13
|
3.0
|
19.7
|
|
Name
|
45
|
86.5
|
4.16
|
4.81
|
76.0
|
92.9
|
|
46
|
92.0
|
3.85
|
4.18
|
80.3
|
97.0
|
|
Street address
|
34
|
65.4
|
5.79
|
8.86
|
53.2
|
75.8
|
|
27
|
54.0
|
7.07
|
13.09
|
40.0
|
67.4
|
|
Funding sources
|
12
|
23.1
|
5.13
|
22.23
|
14.5
|
34.7
|
|
10
|
20.0
|
5.67
|
28.35
|
11.0
|
33.6
|
|
Purpose
|
27
|
51.9*
|
6.08
|
11.71
|
40.0
|
63.7
|
|
17
|
34.0
|
6.72
|
19.76
|
22.2
|
48.3
|
|
Purpose or mission
|
35
|
67.3
|
5.71
|
8.48
|
55.2
|
77.5
|
|
32
|
64.0
|
6.81
|
10.64
|
49.7
|
76.2
|
|
Uses and limitations
|
44
|
84.6
|
4.39
|
5.19
|
73.8
|
91.5
|
|
35
|
70.0
|
6.50
|
9.29
|
55.8
|
81.2
|
|
Association with commercial products
|
37
|
71.2
|
5.52
|
7.76
|
59.1
|
80.8
|
|
30
|
60.0
|
6.95
|
11.58
|
45.8
|
72.7
|
|
Content
|
2
|
3.9
|
2.34
|
60.78
|
1.1
|
12.3
|
|
0
|
0.0
|
0.00
|
n.a.
|
n.a.
|
n.a.
|
|
Identify advertising content
|
45
|
86.5
|
4.16
|
4.81
|
76.0
|
92.9
|
|
37
|
74.0
|
6.22
|
8.41
|
60.0
|
84.4
|
|
Describe editorial policy
|
10
|
19.2*
|
4.80
|
24.96
|
11.4
|
30.5
|
|
2
|
4.0
|
2.78
|
69.50
|
1.0
|
14.9
|
|
Authorship
|
16
|
30.8*
|
5.62
|
18.26
|
20.9
|
42.9
|
|
5
|
10.0
|
4.25
|
42.50
|
4.2
|
22.1
|
|
Privacy
|
48
|
92.3*
|
3.24
|
3.51
|
82.9
|
96.7
|
|
37
|
74.0
|
6.22
|
8.41
|
60.0
|
84.4
|
|
Privacy policy
|
49
|
94.2*
|
2.84
|
3.01
|
85.3
|
97.9
|
|
39
|
78.0
|
5.87
|
7.53
|
64.3
|
87.5
|
|
Describe protection of personal information
|
48
|
92.3*
|
6.24
|
6.76
|
82.9
|
96.7
|
|
37
|
74.0
|
6.22
|
8.41
|
60.0
|
84.4
|
|
User Feedback
|
36
|
69.2
|
5.62
|
8.12
|
57.1
|
79.2
|
|
29
|
58.0
|
7.00
|
12.07
|
43.9
|
71.0
|
|
Feedback mechanism
|
36
|
69.2
|
5.62
|
8.12
|
57.1
|
79.2
|
|
29
|
58.0
|
7.00
|
12.07
|
43.9
|
71.0
|
|
Content Updating
|
1
|
1.9
|
1.67
|
86.98
|
0.3
|
10.2
|
|
0
|
0.0
|
0.00
|
n.a.
|
n.a.
|
n.a.
|
|
Display date createda
|
6
|
11.5
|
3.89
|
33.71
|
5.8
|
21.7
|
|
2
|
4.0
|
2.78
|
69.50
|
1.0
|
14.9
|
|
Display date reviewed or updateda,*
|
10
|
19.2*
|
4.80
|
24.96
|
11.4
|
30.5
|
|
1
|
2.0
|
1.99
|
99.50
|
0.3
|
13.2
|
|
Source:
|
Computations by Mathematica Policy Research, Inc.
|
|
Note:
|
Number=number of websites in stratum found compliant
Percent=percent of websites in stratum estimated to be in compliance
SE= standard error of the percentage estimate
RSE= relative standard error (the standard error divided by the percentage estimate)
CI= confidence interval of percentage estimate
n.a. = Not applicable due to a zero estimate and standard error
Shading indicates estimates that are unreliable, due to large standard error relative to small percentage estimates.
|
aThis criterion element must be fulfilled for all three pages of health content evaluated.
*Difference in estimated percentages for "frequently visited sites" compared to "remainder sites" is statistically significant at the 95 percent level of confidence based on student's t-test of independent samples.
|
|
|