Trajectories of probability of depression symptom episodes over time in the NPHS (2000/01-2010/11).

<p>Trajectories from a 3-class latent class growth model incorporating age, sex, marital status, education, income adequacy, childhood life events, chronic condition and family history of depression. The red line represents the trajectory with high prevalence of depression symptom episodes; the green line, moderate prevalence; the blue line, low prevalence.</p

Association between baseline characteristics and trajectory class of depression symptom episodes.

<p>All estimates were weighted using Statistics Canada survey weights.</p

Association of time-varying neighbourhood variables with the log-odd of having an episode of depressive symptoms over the study period within each trajectory class.

<p>All models were weighted using Statistics Canada survey weights and included age, sex, marital status, education, income adequacy, childhood life events, chronic condition and family history of depression.</p

The year primary school tuition fees were eliminated, the expected age at primary school enrollment, and the earliest birth cohort exposed in each country.

<p>The year primary school tuition fees were eliminated, the expected age at primary school enrollment, and the earliest birth cohort exposed in each country.</p

Sample size and DHS waves used in each country included in the analysis.

<p>Exposed women are those born in cohorts affected by legislative changes. Unexposed women were born in cohorts unaffected by tuition-elimination policies.</p

Behavioral influence on network choice for Jefferson and Sunshine High, parameters and (95% confidence intervals).

<p>Network change parameters are adjusted for structural (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039795#pone-0039795-t003" target="_blank">Table 3</a>) and behavior change parameters (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039795#pone-0039795-t005" target="_blank">Table 5</a>).</p>1<p>Positive values for attractiveness indicate that egos generally prefer to become or maintain friendships with alters who have high levels of the BMI or behavior; negative values indicate a disinclination to keep or maintain friendships with individuals with high levels of the BMI or behavior.</p>2<p>Sociability indicates that egos with high levels of BMI or the behavior prefer to have more friends.</p>3<p>Similarity is the measure of homophily on BMI or the behavior. Positive values indicate a preference for alters whose values are similar to the ego’s.</p

Structural influences on network for Jefferson and Sunshine High, parameters and (95% confidence intervals).¹

1<p>Parameters are the weights actors place on various network configurations. They are the contributions to the objective function. The 95% confidence intervals quantify the precision of the estimates a score function method.</p>2<p>The basic rate parameter for friendship controls how often actors have the opportunity to change their network (add, keep, or drop a friend). Higher values indicate more network changes.</p>3<p>The outdegree parameter is the weight placed on having a friendship tie with <i>any</i> member of the social network, irrespective of the alter’s characteristics.</p>4<p>The reciprocity parameter is the weight an actor places on reciprocating alters’ friendship nominations.</p>5<p>The transitive triplets parameter is the weight an actor places on naming friends who are also named by the actor’s friend.</p>6<p>Positive values of “same” and “similarity” measures are the effects of homophily on these attributes.</p

Respondent characteristics at baseline (Wave 1), unless otherwise noted.

<p>For continuous measures, mean values are given with standard deviations in parentheses. For categorical variables, percentages are given.</p>1<p>“Sum of BMI similarities” is the mean value for the <i>total sum of</i> BMI similarities between the actor and each of his or her alters.</p>2<p>“BMI average similarity” is the mean value for the <i>average</i> similarity between an actor and his or her alters.</p

Network influence on behavior, parameters and (95% confidence intervals).

<p>Behavioral change parameters are adjusted for network structural parameters (<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039795#pone-0039795-t003" target="_blank">Table 3</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0039795#pone-0039795-t004" target="_blank">4</a>).</p><p>Linear and quadratic shape parameters are the effects of the ego’s own behavior (linear) and behavior-squared (quadratic) on his or her future behavior. The “average similarity” parameters represent social influence of the alters’ on the ego.</p

Key terms used in this paper.

<p>Key terms used in this paper.</p