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. 2024 Nov 13;14:27878. doi: 10.1038/s41598-024-79049-z

Fig. 2.

Fig. 2

Interactive modifying associations of SDNN and post-injury surgical intervention status with posttraumatic stress disorder (PTSD) at 3, 6, 12, and -24months in patients with physical injuries. aInteractive modifying associations of SDNN and post-injury surgical interventions on PTSD onset were estimated using multinomial logistic regression; and bodds ratios (95% confidence intervals) were calculated using binary logistic regression for higher (> 22 ms) vs. lower (≤ 22 ms) SDNN at baseline on development of PTSD at each follow-up, adjusted for age, sex, education, previous psychiatric disorders, previous traumatic events, number of physical disorders, scores on Hamilton Depression Rating Scale, and heart rate. *P < 0.05; P < 0.01.