|
Group-level agreement
|
Individual-level agreement
|
Summary
|
---|
Agreement
|
Agreement
|
Agreement
|
Bias
|
Strength of association
|
Agreement including chance
|
Agreement excluding chance
|
---|
Wilcoxon signed rank test p
|
Percentage difference
|
Bland-Altman LOA index
|
Bland-Altman Spearman correlation p
|
Spearman correlation2
|
Tertile classification
|
Kappa statistic
|
Group-level tests at “Good” or “Acceptable” (of 4 tests)
|
Individual-level tests at “Good” or “Acceptable” (of 5 tests)
|
---|
Same tertile
|
Opposite tertile
|
Weighted for tertiles
|
Above vs. below AI
|
---|
Heavy drinkers:
|
Visit 1 (n = 121)
|
.258
|
M 30.8%
|
5.0%
|
.11
|
.39
|
48.8%
|
14.9%
|
.26
|
.21
|
3
|
3
|
Interpretation1
|
Good
|
Poor
|
Good
|
Good
|
Acceptable
|
Poor
|
Poor
|
Acceptable
|
Acceptable
| | |
Visits 1-2 (mean) (n = 116)
|
.976
|
M 16.6%
|
8.0%
|
.552
|
.39
|
46.6%
|
10.3%
|
.31
|
.20
|
3
|
3
|
Interpretation1
|
Good
|
Acceptable
|
Poor
|
Good
|
Acceptable
|
Poor
|
Poor
|
Acceptable
|
Acceptable
| | |
Visits 1-3 (mean) (n = 78)
|
1.00
|
M -9.5%
|
5.1%
|
.148
|
.43
|
47.4%
|
7.7%
|
.40
|
.18
|
4
|
2
|
Interpretation1
|
Good
|
Good
|
Good
|
Good
|
Acceptable
|
Poor
|
Poor
|
Acceptable
|
Poor
| | |
Abstainers/light-drinkers:
|
Visit 1 (n = 83)
|
.440
|
M 7.2%
|
4.8%
|
.04 (.23)
|
.51
|
50.6%
|
9.9%
|
.39
|
.35
|
4
|
5
|
Interpretation1
|
Good
|
Good
|
Good
|
Poor
|
Good
|
Good
|
Good
|
Acceptable
|
Good
| | |
Visits 1-2 (mean) (n = 68)
|
.366
|
M 0.0%
|
4.2%
|
.269
|
.52
|
50.0%
|
8.8%
|
.42
|
.35
|
4
|
5
|
Interpretation1
|
Good
|
Good
|
Good
|
Good
|
Good
|
Good
|
Good
|
Acceptable
|
Acceptable
| | |
Visits 1-3 (mean) (n = 42)
|
1.00
|
M 5.2%
|
2.4%
|
.171
|
.56
|
45.0%
|
10.0%
|
.33
|
.63
|
4
|
4
|
Interpretation1
|
Good
|
Good
|
Good
|
Good
|
Good
|
Poor
|
Good
|
Acceptable
|
Good
| | |
- 1Interpretation criteria [37]:
- Wilcoxon signed rank test: Good: p > 0.05; Poor: p ≤ 0.05
- Percentage difference: Good: 0.0 – < 11%; Acceptable: 11 - 20.0%; Poor: > 20%
- Bland-Altman LOA index (% outside of limit of agreement): Good: ≤ 5%; Poor: > 5%
- Bland-Altman Spearman correlation coefficient: Good: p > 0.05; Poor: p ≤ 0.05
- Spearman correlation coefficient: Good: ≥ 0.50; Acceptable: 0.20 – 0.49; Poor < 0.20
- Tertile classification (% in same tertile): Good: ≥ 50%; Poor: < 50%
- Tertile classification (% in opposite tertile): Good: ≤ 10%, Poor: > 10%
- Weighted Kappa statistic: Good: ≥ 0.60; Acceptable: 0.20 – 0.59; Poor: < 0.20
- 2p < .001 for all Spearman values