Table 2

Intraclass correlation coefficients (95% CI) for each domain of the WHOBARS and each of the three phases of the SSC and for all phases combined

WHOBARS domain
12345
SSC phase
 Sign in (n=66)0.86 (0.77 to 0.91)0.83 (0.72 to 0.90)0.82 (0.71 to 0.89)0.86 (0.77 to 0.92)0.81 (0.69 to 0.89)
 Time out (n=65)0.80 (0.66 to 0.88)0.77 (0.62 to 0.86)0.86 (0.78 to 0.92)0.86 (0.77 to 0.91)0.62 (0.38 to 0.77)
 Sign out (n=35)0.91 (0.83 to 0.96)0.85 (0.70 to 0.93)0.79 (0.59 to 0.90)0.80 (0.50 to 0.91)0.87 (0.74 to 0.93)
All phases* (n=22)0.88 (0.71 to 0.95)0.83 (0.52 to 0.93)0.91 (0.78 to 0.96)0.93 (0.78 to 0.98)0.92 (0.81 to 0.97)
  • *Mean score for each domain across all three phases of the SSC, calculated on complete cases observed. Intraclass correlation coefficients are based on a two-way mixed model with measures of absolute agreement.

  • 1, ‘Setting the stage’; 2, ‘Team engagement’; 3, ‘Communication: activation’; 4, ‘Communication: problem anticipation’; 5, ‘Communication: process completion’; BARS, behaviourally anchored rating scale; SSC, Surgical Safety Checklist.