Table 1

Gender, Country of origin and age of respondents
Characteristics Initial survey respondents (N = 536) Follow-up survey (caregivers BD) (N = 121)
Gender
Female 428(79.85) 101(83.47)
Location
Australiaa 264(49.25) 72(59.50)
USAa 178(33.21) 30(24.79)
UK 29(5.41) 6(4.96)
Canada 24(4.48) 5(4.13)
Otherb 41(7.65) 8(6.61)
Age inyears, mean ± SDc 47.36 ± 12.5d 53.23 ±11.6

Values are n (%) unless otherwise stated. Caregivers BD are adult caregivers of adults with bipolar disorder.

aStatistically significant difference in country of origin.

bSouth Africa, Ireland, France, Italy, Sweden, and Zambia.

cFollow-up caregivers BD who were significantly older than the total sample and older than caregivers BD who only responded to the initial survey.

dFor this category n = 533.

Berk et al.

Berk et al. BMC Medicine 2013 11:162   doi:10.1186/1741-7015-11-162

Open Data