Figure 4 | Scientific Reports

Figure 4

From: Evaluation of the benefits of neutral bicarbonate ionized water baths in an open-label, randomized, crossover trial

Figure 4

Sleep quality assessment with the Japanese version of the Pittsburgh Sleep Quality Index. The primary outcome sleep quality was assessed by the Japanese version of the Pittsburgh Sleep Quality Index. The graph shows the percentage change in scores from baseline (minus SD) on the vertical axis. Control, − 25.67% (SD, − 27.67%); neutral bicarbonate ionized water, − 37.08% (SD, − 26.33%). *p < 0.05 tested by paired t test. NBIW, neutral bicarbonate ionized water.

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