Baseline characteristics of study subjects who completed follow-up after 10 y.

<p>Values are mean (±SD) unless otherwise stated. BMI, body mass index. GBP, gastric bypass surgery. VBG/B, pure restrictive bariatric surgery.</p>***<p><i>P</i><0.001,</p>**<p><i>P</i><0.01,</p>*<p><i>P</i><0.05 and ̂<i>P</i><0.10 using Students <i>t</i> test or Chi-square test.</p>¶<p>Daily salt intake was calculated by multiplying urinary sodium values by 0.0585 (molecular weight of NaCl: 58.5).</p

Baseline characteristics of study subjects who completed follow-up after 2 y.

<p>Values are mean (±SD) unless otherwise stated. BMI, body mass index. GBP, gastric bypass surgery. VBG/B, pure restrictive bariatric surgery.</p>***<p><i>P</i><0.001,</p>**<p><i>P</i><0.01,</p>*<p><i>P</i><0.05 and ∧<i>P</i><0.10 using Students <i>t</i> test or Chi-square test.</p>¶<p>Daily salt intake was calculated by multiplying urinary sodium values by 0.0585 (molecular weight of NaCl: 58.5).</p

Diurnal urinary output after different types of bariatric surgery.

<p>Diurnal urinary output (U-Volume) in absolute values (upper panel) and in relation to body weight (lower panel) after gastric bypass surgery (GBP), after pure restrictive bariatric surgery (VBG/B) and in non-operated obese controls. Changes from baseline (Δ) at the 2 y and 10 y follow-up visits are displayed. Data are mean values adjusted for sex, age, baseline BMI and the baseline level of the respective variables. The bars represent the 95% confidence intervals. Differences between groups (upper panel) are given as mean (95% confidence intervals).*<i>P</i><0.01 and ***<i>P</i><0.001.</p

Weight reduction independent changes from baseline after GBP and VBG/B at the 10 year follow up (multiple linear regression analyses).

a<p><b>:</b> Unadjusted difference between year 10 and baseline within each group. Minus signs denote reductions. Means (±SD) ^bDifference between year 10 and baseline within each group after adjustment for change in body mass index (BMI), sex, age, baseline BMI and the baseline level of the respective variables. Minus signs denote reductions. Mean values.</p>b<p><b>:</b> Difference between year 10 and baseline after adjustment for change in body mass index (BMI), sex, age, baseline BMI and the baseline level of the respective variables. Minus signs denote reductions. Mean values.</p>c<p>: Difference between gastric bypass surgery (GBP) and pure restrictive bariatric surgery (VBG/B) after adjustment for BMI change, sex, age, baseline BMI and the baseline level of the respective variables. Minus signs denote larger reductions in GBP compared to VBG/B group. Figures between brackets denote 95% confidence interval.</p>#<p>Daily salt intake was calculated by multiplying urinary sodium values by 0.0585 (molecular weight of NaCl: 58.5).</p>*<p>P<0.05,</p>**<p>P<0.01 and ***P<0.001 for test of difference between the GBP group and the VBG/B group in adjusted changes, using multiple linear regression.</p

Weight reduction independent changes from baseline after GBP and VBG/B at the 2 year follow up (multiple linear regression analyses).

a<p><b>:</b> Unadjusted difference between year 2 and baseline within each group. Minus signs denote reductions. Means (±SD) ^bDifference between year 2 and baseline within each group after adjustment for change in body mass index (BMI), sex, age, baseline BMI and the baseline level of the respective variables. Minus signs denote reductions. Mean values.</p>b<p><b>:</b> Difference between year 2 and baseline after adjustment for change in body mass index (BMI), sex, age, baseline BMI and the baseline level of the respective variables. Minus signs denote reductions. Mean values.</p>c<p>: Difference between gastric bypass surgery (GBP) and pure restrictive bariatric surgery (VBG/B) after adjustment for BMI change, sex, age, baseline BMI and the baseline level of the respective variables. Minus signs denote larger reductions in GBP compared to VBG/B group. Figures between brackets denote 95% confidence interval.</p>#<p>Daily salt intake was calculated by multiplying urinary sodium values by 0.0585 (molecular weight of NaCl: 58.5).</p>*<p>P<0.05,</p>**<p>P<0.01 and ***P<0.001 for test of difference between the GBP group and the VBG/B group in adjusted changes, using multiple linear regression.</p

Diurnal urinary excretion of sodium after different types of bariatric surgery.

<p>Diurnal urinary excretion of sodium (U-Na⁺) in absolute values (upper panel) and in relation to body weight (lower panel) after gastric bypass surgery (GBP), after pure restrictive bariatric surgery (VBG/B) and in non-operated obese controls. Changes from baseline (Δ) at the 2 y and 10 y follow-up visits are displayed. Data are mean values adjusted for sex, age, baseline BMI and the baseline level of the respective variables. The bars represent the 95% confidence intervals. Differences between groups (upper panel) are given as mean (95% confidence intervals). ***<i>P</i><0.001.</p