marginally significantP = 0.054
The High-Tension Compensation group (Group 3) showed an increased trend in risk, but the result was marginally significant (aOR = 3.01, 95% CI: 0.98–9.27, P = 0.054), while the Latent Decompensation group (Group 2) did not show a significant association with preterm birth (P = 0.200).