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. 2009 Oct 13;339:b3974. doi: 10.1136/bmj.b3974

Table 2.

 Characteristics of trainees and system. Values are numbers (percentages)

Characteristics Initial period (n=2 555) Rest of year (n=17 005) P value*
System
Timing and emergency status:
 In hours 2 275 (89.0) 14 689 (86.4) <0.001
 After hours 257 (10.1) 2 159 (12.7)
 Undetermined timing 23 (0.9) 157 (0.9)
 Emergency 287 (11.2) 2 534 (15.0) <0.001
Trainees
Total No anaesthetic procedures by level of training:
 1st year 1 438 (56.3) 9 854 (57.9) <0.001†
 2nd year 149 (5.8) 635 (3.7)
 3rd year 50 (2.0) 357 (2.1)
 4th year 368 (14.4) 2 970 (17.5)
 5th year 550 (21.5) 3 189 (18.8)
Level of supervision‡:
 Level 1 1 942 (76.0) 10 958 (64.4) <0.001†
 Level 2 213 (8.3) 2 065 (12.1)
 Level 3 361 (14.1) 3 871 (22.8)
 Level 4 39 (1.5) 111 (0.7)
Procedures with use of reporting system 2 393 (93.6) 16 073 (94.5) 0.07

ASA-PS=American Society of Anesthesiologists physical status.

*For χ2 test and Fisher exact test for values <5.

†P value for χ2 test for linear trend.

‡Level 1=one to one supervision in operating theatre; level 2=one to two or more supervision in operating theatre; level 3=one to two or more supervision outside operating theatre; level 4=attending at home.