close to significancep = 0.073
There was an indication that the association between absolute dense volume and COS treatment was stronger among nulliparous women (MD 7.33; 95 % CI: 3.29 to 11.38) than parous women (MD 2.21; 95 % CI: −0.02 to 4.44), with the p value for effect modification being close to significance ( p = 0.073).