Fig. 1
Fig. 2
Fig. 3
Fig. 4
Intra-class correlation coefficient for agreement between GA measured by TCD and GA measured by LMP
| Intra-class correlation (ICC) | 95% confidence interval | F test with true value 0 | |||
|---|---|---|---|---|---|
| Lower bound | Upper bound | Value | Sig | ||
| Single measures | 0.978 | 0.973 | 0.983 | 91.849 | <0.001 HS |
| Average measures | 0.989 | 0.986 | 0.991 | 91.849 | <0.001 HS |
Demographic characteristics of study participants
| Min. | Max. | Mean | SD | ||
|---|---|---|---|---|---|
| Age (years) | 18.00 | 34.00 | 24.00 | 3.85 | |
| BMI (kg/m2) | 21.00 | 34.00 | 27.51 | 3.63 | |
| AFI (cm) | 9.00 | 17.00 | 12.34 | 2.16 | |
| N | % | ||||
| Parity | 1 | 124 | 41.5% | ||
| 2 | 97 | 32.4% | |||
| 3 | 56 | 18.7% | |||
| 4 | 22 | 7.4% | |||
| Total | 299 | 100.0% | |||
Comparison between TCD and BPD regarding correct assessment of GA (accuracy of GA assessment)
| N | % | P value* | ||
|---|---|---|---|---|
| Correct assessment of GA by TCD | Yes | 280 | 93.6% | <0.001 HS |
| No | 19 | 6.4% | ||
| Correct assessment of GA by BPD | Yes | 239 | 79.9% | |
| No | 60 | 20.1% | ||
Intra-class correlation coefficient for agreement between GA measured by BPD and GA measured by LMP
| Intra-class correlation (ICC) | 95% confidence interval | F test with true value 0 | |||
|---|---|---|---|---|---|
| Lower bound | Upper bound | Value | Sig | ||
| Single measures | 0.870 | 0.839 | 0.895 | 14.378 | <0.001 HS |
| Average measures | 0.930 | 0.913 | 0.945 | 14.378 | <0.001 HS |
Accuracy of TCD for GA estimation in the 3rd trimester compared to the results of other studies
| Study | Pearson correlation | P-value |
|---|---|---|
| This study | 0.98 | <0.001 |
| Chavez et al.(15) | 0.95 | 0.001 |
| Reddy et al.(12) | 0.982 | 0.0004 |
| George et al.(14) | 0.995 | <0.001 |
| Bavini et al.(11) | 0.971 | <0.0001 |