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Diane Rae Davis, PhD and Amber Cleverly, MSW - page 48 / 80

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SOCRATES Alcohol Form

Recognition Scale

Figure 20 displays the median recognition scale scores with the interquartile range2 from the SOCRATES alcohol form. There was a trend of increasing scores for most cases, and increases in scores were most apparent at the median between assessment times one and two. A Friedman’s Test was conducted to test the hypothesis that program participants will increas- ingly recognize that alcohol use is problematic for them. Table 12 displays results of tests conducted on the SOCRATES data, presenting data by time intervals for both alcohol and drugs (see page XX). Table 12 indicates that the trend of increasing recognition scale scores from the SOCRATES alcohol form across all three assessment intervals was not statistically significant. Although a significant result from the multivariate analysis usually is the driving force behind bivariate step down analyses (Stevens, 1996) it was nonetheless important to determine if there were any distinct points in time where a significant change in recognition scores occurred. A series of three Wilcoxon-Signed Rank Tests were conducted with the result that SOCRATES recognition scale scores increased significantly between the first and second assessments3 .

Figure 20 Median recognition scale scores with interquartile range from the SOCRATES alcohol form

SOCRATES Alcohol Recognition Scores: Percentile by Time

40

30

Tim e 3 Tim e 2 Tim e 1

20

10

0

25

50

75

P e r c e n tile

Time 1

Tim e 2

Tim e 3

2The interquartile range includes scores at the 25th and 75th percentiles. This approximates ± 1 standard deviation in a normal distribution but applies to non-normal distributions. Includ- ing the interquartile range also allows one to detect differences in trends for cases that scored lower and higher at each assessment interval.

3One can view the test results in Table E1.

Idaho Pre-Treatment Program

47

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