Be Kind to Your Behind: A Systematic Review of the Habitual Use of Bidets in Benign Perianal Disease

Table 3

Odds of developing hemorrhoids and subjective hemorrhoidal symptoms after habitual bidet use.

Study	Comparison		Outcome	Odds of developing hemorrhoids (diagnosed by a physician)		Odds of developing subjective symptoms of hemorrhoids
	Intervention group	Comparator group		M	F	M	F
Kiuchi et al. [14]	Using bidet at least once/day	Using bidet less than once/week	Odds of developing hemorrhoidal symptoms at 1 year	1.013 (0.489–2.106)	1.923 (0.950–3.971)	1.117 (0.799–1.562)	1.058 (0.746–1.508)
Asakura et al. [15]	Using bidet at least once/day	Using bidet less than once/week	Odds of developing hemorrhoidal symptoms at 3 years	1.67 (0.90–3.10)	1.12 (0.62–2.03)	1.18 (0.86–1.61)	1.13 (0.78–1.62)