Table 2 Number of automatic tr acks and manual interventions for each software and type of marker.
Type of marker Software Automatic tr acks Manual interventions Percentage of manual interventions Odds ratio 95% CI
Full black circle DVP
COM 		1286
1147		 113
252		 8.1
18.0		 .40 * .32 – .51
Full white circle DVP
COM 		290
290		 0
0		 0
0		 ≈ž -≈ž – ≈ž
CI, confidence interval for odds ratio.* .05, significantly different from 1