Table 1

Relationship between clinical and epidemiological variables and history and severity of psychosis (χ2 values are for the ordinal linear regression model)

Item Psychotic symptoms χ 2 d.f. P
Never Low grade Significant
No. of cigarettes
None 19 10 10 10.73 2 0.027
≤ 20 8 7 19
> 20 1 6 12
Neuroleptics
Yes 17 9 12 6.25 1 <0.001
No 4 13 28
Gender
Male 12 10 21 1 NS
Female 16 13 20
Course
Good 23 18 29 1 NS
Poor 4 5 12
Illness onset (age in years)
<20 12 9 14 2 NS
20-29 8 11 18
30 8 3 9
Drug history
Never 18 17 21 2 NS
Occasionally 3 2 5
Regular 2 1 6
Socio-economic class
I-II 4 4 7 NS
III-IV 10 9 16
V-VII 10 9 12
Education
Primary 13 13 14 NS
Secondary 8 8 11
Tertiary 3 1 10
Duration (years)
<10 9 3 7 3.80 3 NS
10-19 4 10 14
20-29 8 3 13
30 7 7 7
Alcohol history
Yes 25 15 32 0.58 1 NS
No 3 8 9
No. of depressions
0 4 3 13 2.91 3 NS
1-2 8 7 12
3-5 6 5 8
6-9 3 4 4
10 2 4 3
No. of manic episodes
0 7 2 4 4.54 3 NS
1-2 6 9 17
3-5 6 7 11
6-9 3 2 4
≥ 10 1 3 4