Table 1

Characteristics and possible biases (Kruskal-Wallis & Chi-square (X2)) of the sample (N = 250)

Excluded

N = 197

(N, %)

Included, no participation

N = 227

(N, %)

Participated

N = 250

(N, %)

X2/p


Age

41.4 (sd 21.0)

44.2 (sd 19.9)

40.4 (sd 15.2)

Kruskal-Wallis, ns

Age groups

18-39 yrs

122 (61.9%)

113 (49.8%)

139 (55.6%)

X 2 = 26.64, p = .000

40-59

33 (16.8%)

64 (28.2%)

81 (32.4%)

60 +

42 (21.3%)

50 (22.0%)

33 (12.0%)

Females

92 (46.7%)

97 (42.7%)

111 (44.4%)

ns

Married

51 (26.2%)

48 (21.3%)

71 (28.4%)

ns

Norwegian ethnicity

136 (69%)

215 (94.7%)

241 (96.4%)

X2 = 92.34, p = .000

Employment/income

Paid work

34 (17.3%)

50 (22.0%)

74 (29.6%)

National insurance benefits

121 (61.4%)

128 (56.4%)

116 (46.9%)

X2 = 12.81, p = .012

Other

42 (21.3%)

49 21.6%)

60 (24.0%)

Voluntary admission

124 (63.6%)

138 (61.1%)

193 (78.8%)

X2 = 19.89, p = .000

Length of first stay

11.6 (sd 19.6)

31.0 (sd 37.8)

37.1(sd 48.3)

Kruskal Wallis p < .001


Øiesvold et al. BMC Psychiatry 2012 12:13   doi:10.1186/1471-244X-12-13

Open Data