**Slide 1**

**Slide 2**

**Slide 3**

**Slide 4**

**Slide 5**

**Slide 6**

**Slide 7**

**Slide 8**

**Modeling disease
transmission**

**Dramatis personae**

**Study sites**

**The Studies—Colorado Springs**

**Slide 13**

**Slide 14**

**"Demographics,"**

**Slide 16**

**Slide 17**

**Slide 18**

**Demographic pattern for 13
network studies**

Age, %Male, %African American

**Time frame for 13 network
studies**

**Prevalence of STDs and
HIV—13 studies**

**"Demographics,"**

**Slide 23**

**Exponents and R**^{2 }associated
with power law curves for 13 network studies

**Degree
distributions**

Cumulative probability distribution for interviewed persons—all 13 studies
combined

**Uninterviewed person**

**Degree
distributions**

Cumulative probability distribution for interviewed and noninterviewed
persons—all 13 studies combined

**Missing Links**

Who has not been named?

**"Demographics,"**

**Recursion: definition**

**Recursion: observations from
data--**

all contacts

**Slide 32**

**Slide 33**

**Missing
Links:**

Estimation of the missing

**Missing
Links:**

Calculation

**Missing Links:**

Graphic display

**Proportion of Nodes missing
from networks**

**"Demographics,"**

**Calculating Kappa from
egocentric data**

**Estimate of concurrency by
study**

**Concurrency—SEXUAL partners**

**Slide 42**

**"Demographics,"**

**Transitivity (Clustering)**

**Transitivity by
study**

(all relationships)

**Slide 46**

**Slide 47**

**"Demographics,"**

**Distribution of components**

**Distribution of
components**

Three exceptions

**Slide 51**

**Slide 52**

**Slide 53**

**"Demographics,"**

**Calculation of Assortativity**

**Assortativity by age and
ethnicity**

All contacts

**Assortativity by age and
ethnicity**

Stratified by degree—all contacts

**Slide 58**

**Slide 59**

**Slide 60**

**Slide 61**

**Slide 62**

**Asssortativity**

Summary by type of contact

**Summary of Assortativity
findings**

**Slide 65**

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**Slide 67**

**General Observations--1**

**Slide 69**

**Slide 70**

**Modeling approaches**

**Empirical data support a
bottom up approach**

**Connecting these factors to
disease transmission…**

**Prevalence of STDs and
HIV—13 studies**

**The challenge**

**The “Answer”**

**Slide 77**