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. 2018 Nov 29;4:2055207618816898. doi: 10.1177/2055207618816898

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© The Author(s) 2018

Creative Commons Non Commercial CC BY-NC: This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 License (http://www.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 pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).

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Figure 1. — Mean annual expenditure by age and gender in the two samples. Observed age–gender specific means are denoted by markers, and solid lines indicate weighted loess curve fits.