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. 2015 Sep 14;474(4):945–955. doi: 10.1007/s11999-015-4555-8

Table 6.

‘Making a low-angle drill hole’–time for 10 holes, number of slips, and number of precise drilling behaviors

MS test group Time for 10 holes (seconds) Slips Precise low-angle drilling behavior
3A 170 1 9
3B 165 0 10
3C 201 4 6
3D 211 0 10
3E 153 1 9
3F 211 1 9
3G 208 0 10
3H 222 0 10
Mean 193 0.9 9
MS control group Time for 10 holes (seconds) Slips Precise low-angle drilling behavior
4A 150 5 Bent drill bit 0
4B 121 0 0
4C 150 3 Bent drill bit 0
4D 91 10 0
4E 114 1 0
4F 118 1 Bent drill bit 0
4G 294 8 0
4H 132 2 9
Mean 146 3.8 1.1

MS = medical student.