Table 3.

Comparison of Dietary Fiber Intake Among Men and Women with and without Constipation

	Men, n = 3918			Women, n = 4257
Quartile of fiber intake	No constipation	Constipation	p value*	No constipation	Constipation	p value*
Lowest quartile (<10.1 gm/day)	17.3%	30.5%	<0.001	27.1%	32.8%	0.009
Middle lower quartile (≥10.1 to 14.5 gm/day)	22.3%	19.4%	0.37	26.4%	28.2%	0.40
Middle upper quartile (≥14.5 to 20.1 gm/day)	27.1%	26.7%	0.92	27.2%	24.3%	0.19
Highest quartile (>20.1 gm/day)	33.3%	23.4%	0.007	19.4%	14.7%	0.02

^*Two-sample proportiontests among individual quartiles