Table 1.

Demographic and clinical characteristics of the sample at interview

Characteristics (n = 116)
Age, years, mean (SD) [range]	40.3 (8.9) [22–69]
Ethnicity, n (%)
Caucasian	114 (98.3)
Black/Afro Caribbean	2 (1.7)
Marital status (n = 113), n (%)
Married/cohabiting	96 (85.0)
Single/widowed	2 (1.7)
Divorced/separated	15 (13.3)
Employment status (n = 113), n (%)
Employed	61 (54.0)
Full time	30 (49.2)
Part time	31 (50.8)
Stay-at-home Mom	29 (25.7)
Unemployed (including disability)	15 (13.3)
Student/retired	8 (7.0)
Currently taking psychotropic medication, n (%)	60 (51.7)
Total no. of pregnancies (n = 259), median [range]	2 [1–6]
Total no. of deliveries (n = 213), median [range]	2 [1–6]
No. who became pregnant following the index PP, n (%)	64/116 (55.2)
No. (%) whose index PP was:
Their first delivery	99/116 (85.3)
Their first delivery and first psychiatric episode*	67/99 (67.7)
*Of these 67, no. who had no more children	29 (43.3)
No. (%) of PP episodes
One	82 (70.7)
Two	33 (28.4)
Three	1 (0.9)
Family history of psychiatric illness, n (%)
Yes	70 (60.3)
No	37 (31.9)
Unknown	9 (7.8)
Type of family history (n = 70), n (%)
Bipolar disorder	23 (32.9)
Unipolar disorder	31 (44.3)
Both bipolar and unipolar disorder	12 (17.1)
Other (schizophrenia, PTSD)	4 (5.7)
Female relative experienced postpartum illness, n (%)
Total no. of relatives affected	26 (22.4)
Type of postpartum illness	29
Non-psychotic depression	19 (65.5)
Mania or depression with psychotic features	10 (34.5)
Psychotropic medication taken following subsequent delivery (n = 57), n (%)	7 (12.3)

SD = standard deviation; PP = postpartum psychosis; PTSD = posttraumatic stress disorder.