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Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

The mean values of age, BMI, and spiral artery Doppler indices (S/D ratio, RI and PI) in threatened abortion group (Group 1) and in control group comprising normal pregnant females with no complaints (Group 2)
| Parameter | Group I (n = 25) Mean ± SD | Group II (n = 25) Mean ± SD | p-value |
|---|---|---|---|
| Age | 27.45 ± 3.27 | 26.72 ± 4.83 | 0.241 |
| BMI | 23.52 ± 2.37 | 24.63 +/– 2.91 | 0.633 |
| S/D ratio | 1.82 ± 0.12 | 1.77 ± 0.24 | 0.147 |
| RI | 0.48 ± 0.08 | 0.25 ± 0.05 | 0.003 (significant) |
| PI | 0.72 ± 0.04 | 0.41 ± 0.06 | 0.041 (significant) |