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Table 3 PTSD symptoms and other psychological outcomes in women with and without severe maternal morbidity

From: The relationship between severe maternal morbidity and psychological health symptoms at 6–8 weeks postpartum: a prospective cohort study in one English maternity unit

  No severe maternal morbidity Severe maternal morbidity  
  N, mean %, sd N, mean %, sd P
Prevalence of PTSD symptoms      
Intrusion subscale      
  <20 on IES Intrusion 1,541 94.1% 128 88.3% <0.01
  ≥20 on IES Intrusion 97 5.9% 17 11.7%  
  (missing) (39) -- (2) --  
Avoidance subscale      
  <20 on IES avoidance 1,518 92.7% 113 79.0% <0.001
  ≥20 on IES avoidance 120 7.3% 30 21.0%  
  (missing) (39) -- (4) --  
Either intrusion OR avoidance subscale      
  <20 on both IES subscales 1,454 89.6% 108 75.5% <0.001
  ≥20 on either IES Intrusion or ≥20 IES avoidance 168 10.4% 35 24.5%  
  (missing) (55) -- (4) --  
Both intrusion AND avoidance subscales      
  <20 on at least one IES subscale 1,573 97.0% 131 91.6% 0.003
  ≥20 on both IES intrusion and ≥20 IES avoidance 49 3.0% 12 8.4%  
  (missing) (55) -- (4) --  
PTSD symptoms (continuous)      
  IES intrusion scores mean = 5.50 sd = 7.16 mean = 9.05 sd = 8.41 <0.001
  IES avoidance scores mean = 5.07 sd = 7.57 mean = 8.71 sd = 9.35 <0.001
  IES total scores mean = 10.54 sd = 13.61 mean = 17.79 sd = 16.33 <0.001
Prevalence of probable depression      
  <13 on EPDS 1,412 86.0% 123 85.4% 0.90
  ≥13 on EPDS 229 14.0% 21 14.6%  
  (missing) (36) -- (3) --  
Depressive symptoms (continuous)      
  EPDS total scores mean = 6.72 sd = 5.11 mean = 7.30 sd = 4.90 0.19
Total 1,677   147