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. 2023 Aug 14;12:73. doi: 10.1186/s40249-023-01119-7

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Monthly numbers, trends and fitted Poisson or quasi-Poisson segmented regression models for three outcomes in China from 1 January 2015 to 31 December 2019, accounting for seasonality^#. Percentage of 30 − day ART initiation (a), mean CD4 count at ART initiation (b) and mean estimated time from infection to diagnosis (c). #: three indicators include proportion of 30-day ART initiation, mean CD4 counts (cells/μl) at ART initiation, and mean estimated time from infection to diagnosis (year). ART: Antiretroviral therapy. treat-all: June 2016. Percentage of 30 − day ART initiation was modelled using quasi-Poisson segmented regression model. Mean CD4 count at ART initiation and mean estimated time from infection to diagnosis was modelled using Poisson segmented regression model