Table 3.
Multivariate Conditional Logistic Regression Models for SCD.
| OR (95% CI) |
p-value | |
|---|---|---|
| Model 1. Usable TWA in Ch 2 and VPCs (N=133, 46 SCD) | ||
| Lower half of VPCs (≤30, N=58, 9 SCD) |
1.0 | NA |
| Upper half of VPCs (>30, N=88, 40 SCD) |
6.62 (2.30–19.06) |
<0.001 |
| TWA>37 µV in Ch2 (N=35, 14 SCD) |
4.84 (1.48–15.81) |
0.009 |
| Model 2. Usable Frequency Domain HRV with VPCs (N=128, 38 SCD) | ||
| Lower half of VPCs (≤30, N=58, 9 SCD) |
1 | |
| Upper half of VPCs (>30, N=86, 40 SCD) |
6.91 (2.02–26.7) |
0.002 |
| DFA1 <1.015 (N=45, 22 SCD) | 5.00 (1.8–16.6) |
0.003 |
| Model 3. Combined VPCs and TWA (N=133, 46 SCD) | ||
| Lower half of VPCS or TWA TWA ≤37 µV in Ch2 (N=51, 9 SCD) |
1 | NA |
| Either upper half of VPCs or TWA>37 µV in Ch2 (N=62, 21 SCD) |
2.59 (1.17–6.00) |
0.027 |
| Both upper half of VPCs and TWA>37 µV in Ch2 (N=20, 14 SCD) |
8.23 (3.25–20.84) |
<0.001 |
| Model 4. Combined VPCs and DFA1 (N=128, 38 SCD) | ||
| Lower half of VPCs and DFA1≥1.015 (N=51,6 SCD) |
1 | NA |
| Upper half of VPCs or DFA1
<1.015 (N=50, 14 SCD) |
3.10 (1.19–8.09) |
0.021 |
| Both upper half of VPCs and DFA1 <1.015 (N=26, 17 SCD) |
9.59 (3.74–24.56) |
<0.001 |
Table Legend: See Legend Table 1.