RESULTS	Psyllium also increased stool water weight ( psyllium 84.0 g/BM ; docusate 71.4 g/BM ; P = 0.04 ) , total stool output ( psyllium 359.9 g/week : docusate 271.9 g/week ; P = 0.005 ) , and O'Brien rank-type score combining objective measures of constipation ( psyllium 475.1 ; docusate 403.9 ; P = 0.002 ) .\