Distances from the bladder neck to the lower tip of symphysis pubis and the corresponding X and Y values were measured at rest and during stress.

• 于安静状态和深吸气时,测量膀胱颈与耻骨下端的距离以及膀胱颈所对应的坐标值,分别为Dr、Xr、yr和Ds、Xs、Ys。