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Table 2 Baseline characteristics of participants by study group

From: Innovative psycho-educational program to prevent common postpartum mental disorders in primiparous women: a before and after controlled study

      95% CI for
the difference
   Control
(n = 210)
Intervention
(n = 189)
p Lower Upper
Sociodemographic characteristics
Age Mean (s.d.) 30.2 (5.31) 31.62 (4.79) 0.004 -2.47 -0.47
Aboriginal/Torres Strait Islander n (%) 2 (1) 1 (0.5) 0.625   
English spoken at home n (%) 198 (94.3) 186 (98.4) 0.03   
Married n (%) 148 (70.5) 135 (71.4) 0.834   
Completed post-secondary education n (%) 135 (64.3) 157 (83.1) <.001   
Employment ASCO classification *:       
   1 and 2 n (%) 78 (37.3) 111 (59.0) <. 001   
   3 and 4 n (%) 35 (16.7) 31 (16.5)    
   5 and 6 n (%) 73 (34.8) 34 (18.1)    
   7, 8 and 9 n (%) 24 (11.5) 12 (6.4)    
Health and reproductive history
Self-rated health good or excellent n (%) 184 (87.7) 177 (93.6) 0.321   
Psychiatric history
(panic episodes only)
n (%) 58 (27.6) 42 (22.2) 0.401   
Psychiatric history
(other disorders)
n (%) 16 (7.6) 25 (13.2) 0.065   
More than one previous pregnancy n (%) 40 (19.1) 53 (28) 0.036   
Unexpected pregnancy n (%) 56 (26.8) 29 (15.3) 0.005   
Conceived by ART+ n (%) 18 (8.6) 17 (9) 0.893   
Caesarean birth n (%) 69 (32.9) 59 (31.2) 0.726   
Psychological factors
Confident on leaving hospital n (%) 123 (58.9) 91 (50.0) 0.079   
Can confide in partner n (%) 185 (88.5) 163 (89.6) 0.742   
Feels supported by partner n (%) 200 (96.2) 173 (95.1) 0.596   
Vulnerable personality style (VPS vulnerability subscale score) Mean (s.d.) 12.75 (4.16) 12.7 (3.96) 0.904 -0.75 0.85
Current mood (EPDS) Mean (s.d.) 5.81 (4.01) 6 (3.75) 0.646 -0.96 0.59
Partner relationship (IBM Care subscale score) Mean (s.d.) 33.34 (3.76) 32.76 (4.12) 0.149 -0.21 1.36
Partner relationship (IBM Control subscale score) Mean (s.d.) 4.58 (4.26) 4.76 (4.75) 0.694 -1.08 0.72
Infants
Twins n (%) 3 (1.4) 1 (0.5) 0.368   
Female n (%) 109 (52.7) 92 (48.9) 0.46   
Birth weight (g) Mean (s.d.) 3503.6 (437.5) 3406.9 (510.4) 0.054 -1.76 195.30
Gestation at birth (weeks) Mean (s.d.) 39.86 (1.45) 39.62 (1.56) 0.116 -0.06 0.54
Infant age at interview (weeks) Mean (sd) 4.3 (2.5) 3.9 (2.2) 0.19 -0.17 0.81
Rating of baby's health Good or Excellent n (%) 201 (96.2) 174 (95.6) 0.401   
Currently breastfeeding n (%) 163 (78) 160 (87.9) 0.01   
Had breastfeeding problems n (%) 50 (23.8) 46 (24.3) 0.902   
Length of time baby cried or fussed in previous 24 hours (hours) Mean (s.d.) 2.86 (2.04) 3.52 (2.04) 0.005 -1.11 -0.2
  1. * ASCO Australian Standard Classification of Employment classification [60]
  2. 1 and 2: Managers, Administrators, Professionals
  3. 3 and 4: Associate Professionals, Tradespersons, Associated Workers
  4. 5 and 6: Advanced/Intermediate Clerical, Sales, Service Workers
  5. 7, 8 and 9: Intermediate Production and Transport Workers, Elementary Clerical, Sales and Service Workers, Labourers & Related Workers, students & unemployed
  6. + ART assisted reproductive technology