Table 1 Sociodemographic and clinical characteristics of participants who completed the childbirth-related posttraumatic stress disorder assessments or the intrusive memory diaries (n = 133).

From: Single-session visuospatial task procedure to prevent childbirth-related posttraumatic stress disorder: a multicentre double-blind randomised controlled trial

Sample characteristics

Frequency (n, %)

Median (IQR) or Mean (SD)a

Sociodemographic characteristics

Age at the time of childbirth (years)

 

33.9 (4.2)△

Nationalityb

 Swiss

55 (41.4)

 

 Other European

36 (27.1)

 

 Non-European

7 (5.3)

 

Educationb

 Primary school

1 (0.8)

 

 Secondary school or equivalent

9 (6.8)

 

 Apprenticeship

33 (24.8)

 

 University

69 (51.9)

 

Marital status at one week postpartumb

 In a relationship

74 (55.6)

 

 Single or separated

38 (28.6)

 

Obstetrical variables

Gravidity

 First pregnancy

59 (44.4)

 

 Second pregnancy

45 (33.8)

 

 Third pregnancy

19 (14.3)

 

 Fourth pregnancy or more

10 (7.5)

 

Parity

 Nulliparous

67 (50.4)

 

 Parous

66 (49.6)

 

Gestational age (weeks)

 

40 (2.0)

Pregnancy type

 Single

131 (98.5)

 

 Multiple

2 (1.5)

 

Blood loss > 1 litre during childbirthb

 Yes

10 (7.5)

 

 No

112 (84.2)

 

Neonatal variablesc

Apgar scored

 Apgar score 1 min

 

9 (2)

 Apgar score 5 min

 

10 (1)

Birth weight (grams)

 

3273 (499.4)△

Mental health variables

Prior psychological traumab,e

 Yes

56 (42.1)

 

 No

56 (42.1)

 

Depression symptoms at six weeks postpartum (EPDS score)

 

5 (7)

Probable depressionf

19 (14.3)

 

Anxiety symptoms at six weeks postpartum (HADS-A score)

 

5 (4)

Screening questionsg

 Question 1 (life in danger)

 

2 (2)

 Question 2 (baby’s life in danger)

 

3 (4)

 Question 3 (frightened)

 

3 (4)

 Question 4 (helpless)

 

5 (4)

  1. EPDS Edinburgh Postnatal Depression Scale (range 0–30); HADS-A Hospital Anxiety and Depression Scale (anxiety subscale only, range 0–21).
  2. aMedian and interquartile ranges are reported if the data did not follow a normal distribution according to a Shapiro–Wilk test and means and standard deviations (indicated with a△) otherwise.
  3. bTotal of % does not equal 100 because of missing values (n = 98 for nationality, n = 112 for education, marital status, and prior psychological trauma, n = 122 for blood loss, n = 119 for EPDS).
  4. cIn case of multiple pregnancies, data of the firstborn child was used.
  5. dApgar score ranges from 0 to 10, with a higher score referring to higher infant extra-uterine functioning.
  6. eAssessed at six weeks postpartum with a dichotomous self-report question: “In the past, have you experienced any traumatic event(s) (e.g., death of a relative, car accident, physical or sexual assault, etc)?”.
  7. fEPDS score > 10.5.
  8. gThe four screening questions are detailed in the Methods.
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