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. 2017 Apr;15(3):409–416. doi: 10.2174/1570159X14666160607101400

Table 4. Association between Predominant Polarity and onset of illness.

BD
(n= 86)
BD with PSU
(n= 63)
BD with AUD
(n=69)
DP
(n=35)
MP
(n=40)
UP
(n=11)
χ2 df p DP
(n=33)
MP
(n=19)
UP
(n=11)
χ2 df p DP
(n=37)
MP
(n=9)
UP
(n=23)
χ2 df p
Manic onset: n
(%)
5
(14.28)
30
(75.00)
8
(72.00)
30.13 2 <0.0001 0
(0.00)
18
(94.73)
6
(54.54)
47.41 2 <0.0001 1
(2.70)
9
(100.00)
12
(52.17)
37.29 2 <0.0001
Depressive onset: n
(%)
30
(85.71)
10
(25.00)
3
(27.27)
33
(100.00)
1
(5.26)
5
(45.45)
36
(97.29)
0
(0.00)
11
(47.82)

Legend: BD=Patients with bipolar disorders; PSU=polysubstance use; AUD=alcohol use disorder; DP=depressive predominant polarity; MP=manic predominant polarity; 
UP=uncertain predominant polarity; df=Degrees of freedom.