Skip to main content
. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Prev Sci. 2015 Jan;16(1):133–144. doi: 10.1007/s11121-014-0465-3

Table 1.

Descriptive Information for Traditional Analytic Measures and SNA Measures of Diffusion Potential

Traditional Analytic Measures
Pretest (N = 42 networks)
Posttest (N = 40 networks)a
Mean SD Min Max Mean SD Min Max
Participation Rate 0.14 0.09 0.05 0.46 0.15 0.10 0.04 0.53
Representativeness
Demographic Representativeness
 Genderb −0.02 0.20 −0.47 0.42 −0.02 0.20 −0.50 0.46
 Free Lunchb −0.05 0.20 −0.42 0.44 −0.05 0.19 −0.71 0.41
Behavioral Representativeness
 Gradesc 0.05 0.30 −0.58 0.86 0.04 0.57 −2.58 1.03
 Delinquencyc −0.03 0.42 −0.83 0.99 0.00 0.49 −1.08 1.30
 Substance Use Attitudesc 0.03 0.33 −1.06 0.59 0.00 0.41 −1.06 0.72
SNA Measures
Pretest (N = 42 networks)
Posttest (N = 40 networks)a
Mean SD Min Max Mean SD Min Max
Social Integration
Connectivity
 Structural Cohesion 2.51 0.67 1.23 3.96 2.82 0.68 1.35 4.06
 Social Distance 4.49 1.39 1.80 9.05 4.30 1.15 1.85 6.85
Clustering
 Segregation Index 0.70 0.07 0.56 0.95 0.70 0.10 0.57 0.96
 Transitivity Ratio 0.34 0.09 0.21 0.60 0.34 0.08 0.20 0.57
Hierarchy
 Indegree Centralization 0.08 0.04 0.02 0.16 0.09 0.04 0.02 0.20
 Betweenness Centralization 0.10 0.05 0.02 0.20 0.10 0.04 0.02 0.23
Location of the Intervention Participants in the Network
Distribution of Participants in the Network
 Prop. of Groups with 1+ Part. 0.65 0.24 0.09 1.00 0.67 0.25 0.00 1.00
 Prop. within 2 Steps of a Part. 0.48 0.19 0.07 0.89 0.54 0.19 0.08 0.88
Participants’ Relative Status
 Indegreec −0.07 0.41 −0.94 0.89 −0.01 0.34 −0.69 0.71
 Betweennessc 0.11 0.47 −0.80 1.72 0.15 0.42 −0.88 1.00

Note. Prop = Proportion; Part = Intervention participant.

a

The posttest sample size was 40 networks, because two networks did not administer a posttest survey. The measures that relied on student survey data (i.e., free lunch status, grades, delinquency, substance use attitudes) had n = 39 at posttest because one network did not have any survey data from SFP10-14 participants in that network at that assessment.

b

Measure scored as the difference in proportions between participants and non-participants. Positive values indicate that participants were higher than non-participants on that measure.

c

Measure scored as the Cohen’s D effect size between participants and non-participants. Positive values indicate that participants were higher than non-participants on that measure.