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. 2014 Jul 3;4(7):e005075. doi: 10.1136/bmjopen-2014-005075

Table 3.

Age effects for the three different checks in the time-out procedure: checking the patient (n=1074), the procedure (n=1074), and the side/site (n=1074)

Model 0 (check patient+age+sex) Model 1 (check procedure+age+sex) Model 2 (check side/site+age+sex)
Fixed effects Estimate (SE) Estimate (SE) Estimate (SE)
Check patient (constant) 3.499 (0.334)
Check procedure (constant) 2.276 (0.282)
Check side/site (constant) 2.739 (0.204)
Patient's age 0.008 (0.008) −0.021 (0.006)* 0.012 (0.007)*
Patient's sex −0.185 (0.288) 0.124 (0.198) 0.160 (0.246)
Random effects
Variance components:
 Intraclass correlation 27.172 24.990 10.854
 Hospital (level 2) 1.228 (0.623)* 1.096 (0.464)* 0.401 (0.236)*
 Surgical procedure (level 1) 0.834 (0.036) 0.922 (0.040) 0.950 (0.041)

*p<0.05.