Clinical trials by economic development status, 2006–2012.

<p>Clinical trials by economic development status, 2006–2012.</p

Total annual number of registered clinical trial sites beginning a study by proportion of clinical trials starting by funding source.

Data for the United States and other high-income OECD countries are displayed separately. Organization-sponsored funding sources included individuals, universities, foundations, and community-based organizations.</p

Density of clinical trial sites (per million people) by country, ranked by average annual trial density 2006–2012.

<p>Density of clinical trial sites (per million people) by country, ranked by average annual trial density 2006–2012.</p

Proportion distribution of registered clinical trials among phase 3 studies by World Bank economic development category.

<p>Data for the United States and other high-income OECD countries are displayed separately.</p

Proportion distribution of registered clinical trials among phase 2 studies by World Bank economic development category.

<p>Data for the United States and other high-income OECD countries are displayed separately.</p

Average annual clinical trial site growth rate by country, ranked by average annual growth rate 2006–2012.

<p>Average annual clinical trial site growth rate by country, ranked by average annual growth rate 2006–2012.</p

Total annual number of registered clinical trial sites beginning a study by World Bank economic development category.

<p>Data for the United States and other high-income OECD countries are displayed separately. Organization-sponsored funding sources included individuals, universities, foundations, and community-based organizations.</p

Proportion distribution of registered clinical trials among phase 1 studies by World Bank economic development category.

<p>Data for the United States and other high-income OECD countries are displayed separately.</p

Flow diagram of phases of enrollment, allocation, follow-up and analysis.

Flow diagram of phases of enrollment, allocation, follow-up and analysis.</p

Baseline sexual behaviors of participants by allocation arm.

Baseline sexual behaviors of participants by allocation arm.</p