   Mean difference   P value   ------------ ------- ------ ------ ---------------- ------ ------ ----------------- ---------   Distance 0   O       00     00.0   0.0              00.0   00.0   −0.0              0.000   N            00      00.0   0.0    00.0             00.0                               Distance 0   O       00     00.0   0.0              0.0    00.0   0.0               0.000   N            00      00.0   0.0    0.0              00.0                               Distance 0   O       00     0