Table 3

Regression results: associations of interruptions and workload

Dependent variable: NASA workload
B (95% CI)SEβR2 (ΔR2)
Control variables (step 1)
 Time7.92 (0.84 to 15.00)3.560.23*0.09 (0.09*)
 Position−9.07 (−17.71 to −0.43)4.34−0.22*
Predictor variable (step 2)
 Workflow interruptions2.78 (0.22 to 5.34)1.290.22*0.14 (0.05*)
  • Note: time (1 morning, 2 afternoon); position (1 specialist, 2 junior level). Regression values of last step displayed. Constant values omitted.

  • B, unstandardised regression coefficient; β, standardised regression coefficient; R2, variance explained (in boldface if significance level *p<0.05).