Table 2 Primary and secondary outcomes

Concentration performance d2 (points)

 d2 shift (SD)

20.2 (37.5)

11.7 (18.6)

11.9 (22.1)

 d2 shift, absolute difference versus control [95% CI]

–

− 8.5 [− 19.7, 2.7]

− 8.3 [− 19.4, 2.7]

 d2 before BLS (SD)

181.4 (52.7)

189.9 (7.4)

191.1 (50.9)

 d2 after BLS (SD)

201.5 (47.4)

201.6 (49.8)

203 (48.8)

d2 subscores

 Error rate (%)

  Subscore shift (SD)

− 0.1 (2.2)

0.2 (1.1)

− 0.1 (1)

  Subscore shift, absolute difference versus control [95% CI]

–

0.3 [− 0.4, 0.9]

0 [− 0.6, 0.6]

  Subscore before scenario (SD)

2 (7.6)

2.1 (10.2)

2.3 (9.5)

  Subscore after scenario (SD)

1.9 (8.7)

2.3 (9.7)

2.2 (10)

 Errors of commission (points)

  Subscore shift (SD)

0.2 (5.2)

0.6 (2.1)

− 0.2 (2)

  Subscore shift, absolute difference versus control [95% CI]

–

0.4 [− 1, 1.8]

− 0.4 [− 1.8, 1]

  Subscore before scenario (SD)

3.7 (13.1)

4 (19.1)

4.7 (19)

  Subscore after scenario (SD)

3.9 (16.6)

4.6 (18.6)

4.5 (19.4)

 Errors of omission (points)

  Subscore shift (SD)

− 6.6 (10.8)

− 2.5 (7.4)

− 1.8 (9.6)

  Subscore shift, absolute difference versus control [95% CI]

–

4.1 [0.3, 7.9]

4.8 [1, 8.6]

  Subscore before scenario (SD)

20 (25.2)

17 (22.1)

16.7 (21)

  Subscore after scenario (SD)

13.4 (18.4)

14.5 (18.7)

14.9 (18.6)

 Processed target objects (points)

  Subscore shift (SD)

13.8 (35.1)

9.8 (17.5)

9.9 (18.7)

  Subscore shift, absolute difference versus control [95% CI]

–

− 4 [− 14.3, 6.3]

− 3.9 [− 14.1, 6.2]

  Subscore before scenario (SD)

205 (46)

210.9 (44.5)

212.5 (43.7)

  Subscore after scenario (SD)

218.8 (41.3)

220.7 (6.3)

222.4 (41.2)

Dexterity NHPT (s)

 NHPT shift (SD)

− 0.6 (2.5)

− 1 (2.6)

− 0.3 (2.8)

 NHPT shift, absolute difference versus control [95% CI]

–

− 0.4 [− 1.4, 0.7]

0.3 [− 0.7, 1.4]

 NHPT before scenario (SD)

24.8 (3.6)

24.2 (3.1)

24 (3.5)

 NHPT after scenario (SD)

24.2 (3.1)

23.2 (2.8)

23.7 (3.1)