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Retrospective Study
©The Author(s) 2025.
World J Psychiatry. Sep 19, 2025; 15(9): 106906
Published online Sep 19, 2025. doi: 10.5498/wjp.v15.i9.106906
Table 6 Autonomic nervous system changes
Indicator
Depressed group (n = 124)
Non-depressed group (n = 124)
P value
Low-frequency component (ms²)52.3 ± 10.678.5 ± 12.4< 0.01
High-frequency component (ms²)28.7 ± 6.545.2 ± 8.7< 0.01
LF/HF ratio1.8 ± 0.41.2 ± 0.3< 0.01
Standard deviation of R-R interval (ms)85.4 ± 15.2105.6 ± 18.3< 0.01
Root mean square of the difference of adjacent R-R interval (ms)25.1 ± 5.435.2 ± 6.7< 0.01
Percentage of pairs of R-R intervals with > 50 ms difference (%)12.3 ± 3.222.4 ± 4.5< 0.01
Heart rate (beats/min)82.3 ± 10.475.6 ± 9.2< 0.01
Pre-ejection period (ms)120.4 ± 15.3105.7 ± 12.6< 0.01
Cardiac sympathetic nerve activity (AU)45.6 ± 8.732.4 ± 6.5< 0.01


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