Table 4: Comparison of outcomes between Low Risk Birth cohorts: Prevalence, overall percent agreement, positive percent agreement (with respect to CIHI-DAD data and with respect to BIS data), and Kappa statistic for agreement between CIHI-DAD and BIS data sources.
| Condition (N = 779,979) | Prevalence, % | Difference DAD-BIS | Overall % Agreement | Positive % Agreement | Kappa coefficient (95% CI) | ||
| DAD | BIS | DAD cases in BIS | BIS cases in DAD | ||||
| Cesarean, ICU and NICU agreement after BIS exclusions N = 129,617 | |||||||
| Cesarean | 14.32% | 14.30% | 0.02% | 99.9% | 99.6% | 99.5% | 0.994 (0.993–0.995) |
| ICUa | 0.09% | 0.05% | 0.04% | 99.9% | 77.8% | 39.8% | 0.527 (0.440–0.614) |
| NICUa | 7.78% | 8.73% | ‒0.95% | 98.2% | 84.2% | 94.5% | 0.881 (0.876–0.886) |
| Small-for-gestational age <10th percentileb | 10.61% | 10.80% | ‒0.19% | 98.7% | 93.2% | 94.9% | 0.933 (0.930–0.937) |
| Large-for-gestational age >90th percentileb | 5.96% | 5.83% | 0.13% | 99.3% | 94.7% | 92.7% | 0.933 (0.929–0.937) |
| Cesarean, ICU and NICU agreement after DAD exclusions N = 135,869 | |||||||
| Cesarean | 12.03% | 12.06% | ‒0.03% | 99.9% | 99.4% | 99.6% | 0.994 (0.993–0.995) |
| ICU | 0.06% | 0.04% | 0.02% | 100.0% | 73.6% | 45.4% | 0.561 (0.462–0.660) |
| NICU | 7.47% | 8.37% | ‒0.90% | 98.3% | 84.4% | 94.5% | 0.883 (0.878–0.888) |
| Small-for-gestational age <10th percentilec | 10.69% | 10.77% | ‒0.08% | 98.8% | 94.0% | 94.7% | 0.937 (0.934–0.940) |
| Large-for-gestational age >90th percentilec | 5.47% | 5.48% | ‒0.01% | 99.2% | 92.8% | 92.8% | 0.924 (0.920–0.929) |
aTotal included in analysis N = 129,587.
bTotal included in analysis N = 129,358 – limited to births between 22- and 43-weeks’ gestation with non-missing birthweight and sex in both CIHI-DAD and BIS.
cTotal included in analysis N = 136,725 – limited to births between 22- and 43-weeks’ gestation with non-missing birthweight and sex in both CIHI-DAD and BIS.