Phase I clinical trial enrollment duration increase (months)

Phase I saw the largest increase of 39% with enrollment taking an average additional five months for trials ending enrollment in 2023 versus 2019.

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APA

IQVIA Institute. (2023). Rethinking Clinical Trial Country Prioritization. Retrieved September 15, 2026, from https://www.iqvia.com/insights/the-iqvia-institute/reports-and-publications/reports/rethinking-clinical-trial-country-prioritization. Via StatOrigin, https://statorigin.org/stat/stat_024EW5J3ASBH3S1B1K5HEKCBJD

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MLA

IQVIA Institute. "Rethinking Clinical Trial Country Prioritization." 2023, https://www.iqvia.com/insights/the-iqvia-institute/reports-and-publications/reports/rethinking-clinical-trial-country-prioritization. Accessed 15 Sept. 2026 via StatOrigin, https://statorigin.org/stat/stat_024EW5J3ASBH3S1B1K5HEKCBJD.

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Chicago

IQVIA Institute. "Rethinking Clinical Trial Country Prioritization." 2023. https://www.iqvia.com/insights/the-iqvia-institute/reports-and-publications/reports/rethinking-clinical-trial-country-prioritization. Accessed September 15, 2026. Cited from StatOrigin, https://statorigin.org/stat/stat_024EW5J3ASBH3S1B1K5HEKCBJD.

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BibTeX

@misc{iqvia2023phaseekcbjd, author = {{IQVIA Institute}}, title = {Rethinking Clinical Trial Country Prioritization}, year = {2023}, howpublished = {StatOrigin, https://statorigin.org}, url = {https://statorigin.org/stat/stat_024EW5J3ASBH3S1B1K5HEKCBJD}, note = {Original source: https://www.iqvia.com/insights/the-iqvia-institute/reports-and-publications/reports/rethinking-clinical-trial-country-prioritization. Accessed September 15, 2026.} }

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Record last modified 17 September 2026. Value type: actual. Update cadence: annual. This page is permanently addressable at statorigin.org/stat/stat_024EW5J3ASBH3S1B1K5HEKCBJD.