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. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: J Urol. 2019 Mar;201(3):606–614. doi: 10.1016/j.juro.2018.07.064

Figure 3. Association between perceived need to drink more and daily water intake.

Figure 3.

Linear mixed-effects models were used to determine the association between momentary perceived need to drink more on a Likert scale and daily water intake. Models included a random intercept for each patient and adjusted for age, sex, weekday indicator, time of prompt (morning, noon, afternoon, evening), and prior kidney stone passage or surgery. We assumed every participant always responded affirmatively to each level of agreement with the statement: “I need to drink more water than I have today.” to estimate daily water intake, proportion of daily water goal met, and proportion of participants who met the daily water goal ≥4 days. The histograms represent the frequency of estimated daily water intake volume for each level of agreement. The reported differences and p-values reflect comparisons of estimated daily water intake for each level of agreement with “disagree”.