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. 2013 Nov 25;3(11):e003519. doi: 10.1136/bmjopen-2013-003519

Table 2.

Difference in observed glitches between observer specialties

Glitch category Total observed n (% of total) Observed by both HFs and clinical n (% of category) HFs observed n (% of category) Clinical observed n (% of category) Difference % (95% CI) p Value
Absence 292 (5.1) 123 (42.1) 202 (69.2) 213 (72.9) 3.8 (−3.9 to 11.5) 0.362
Communication 334 (5.8) 128 (38.3) 218 (65.3) 244 (73.1) 7.8 (0.5 to 15.1) 0.036
Distractions 1342 (23.4) 585 (43.6) 887 (66.1) 1039 (77.4) 11.3 (7.9 to 14.8) <0.001
Environment 15 (0.3) 5 (33.3) 8 (53.3) 12 (80.0) 26.7 (−12.4 to 65.7) 0.245
Equipment design 595 (10.4) 224 (37.6) 379 (63.7) 440 (73.9) 10.3 (4.9 to 15.7) <0.001
Equipment maintenance 278 (4.8) 146 (52.5) 206 (74.1) 218 (78.4) 4.3 (−3.1 to 11.7) 0.273
Health and safety 423 (7.4) 171 (40.4) 243 (57.4) 350 (82.7) 25.3 (19.1 to 31.5) <0.001
Patient related 120 (2.1) 36 (30.0) 49 (40.8) 107 (89.2) 48.3 (37.1 to 59.6) <0.001
Planning and preparation 789 (13.7) 304 (38.5) 495 (62.7) 596 (75.5) 12.8 (8.2 to 17.4) <0.001
Process deviation 614 (10.7) 227 (37.0) 375 (61.1) 465 (75.7) 14.7 (9.4 to 20.09) <0.001
Slips 508 (8.8) 256 (50.4) 386 (76.0) 377 (74.2) −1.8 (−7.3 to 3.7) 0.562
Training 154 (2.7) 36 (23.4) 70 (45.5) 120 (77.9) 32.5 (21.6 to 43.4) <0.001
Workspace 278 (4.8) 67 (24.1) 165 (59.4) 180 (64.7) 5.4 (−3.0 to 13.8) 0.221
Overall 5742 2308 (40.2) 3683 (64.1) 4361 (75.9) 11.8 (10.1 to 13.5) <0.001

HFs, human factors.