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. 2023 Feb 9;60:00469580231155295. doi: 10.1177/00469580231155295

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© The Author(s) 2023

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (https://creativecommons.org/licenses/by-nc/4.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Receiver operating characteristic curves for the development set and the validation set of 3 prediction models. These models adjusted age (continuous), residence located in urban or rural areas (urban and rural), marital status (married and unmarried), income (lower 6500 RMB, 6500-24 000 RMB and more than 24 000 RMB), education (illiteracy, 0-6 years and above 6 years), BMI (continuous), drinking (current, noncurrent), smoking (current, noncurrent), diabetes (yes or no), sedentary time (continuous), sleeping quality (very well, well, bad and very bad), weekly fruit consumption frequency (7, 4-6, 2-3 days and less than 1 day), PHQ-9 scores (continuous), BADL (continuous), self-rated squat ability (no difficulty, with some difficulty and unable to perform), handgrip strength (continuous): (A) handgrip strength (development set), (B) handgrip strength (validation set), (C) self-rated squat ability (development set), (D) self-rated squat ability (validation set), (E) handgrip strength and self-rated squat ability (development set), and (F) handgrip strength and self-rated squat ability (validation set).