Table 1

Binary logistic regression analysis of factors associated with mood instability (n=27 704)

Factor	Group	Number in sample	Prevalence of documented mood instability within 1 month (%)	Association with mood instability
				Unadjusted		Adjusted model*
				OR (95% CI)	p Value	OR (95% CI)	p Value
Age (years)	16–25	7133	16.3	1.28 (1.17 to 1.40)	<0.001	1.32 (1.20 to 1.45)	<0.001
	26–35	7842	13.2	Reference		Reference
	36–45	6611	9.8	0.71 (0.64 to 0.79)	<0.001	0.73 (0.65 to 0.81)	<0.001
	46–55	4066	9.1	0.65 (0.58 to 0.74)	<0.001	0.67 (0.58 to 0.76)	<0.001
	56–65	2052	7.1	0.50 (0.42 to 0.60)	<0.001	0.50 (0.41 to 0.60)	<0.001
Gender	Male	12 532	10.9	0.81 (0.75 to 0.87)	<0.001	0.75 (0.69 to 0.81)	<0.001
Gender	Female	15 172	13.2	Reference		Reference
Ethnicity	White	15 691	12.5	Reference		Reference
	Asian	1511	12.6	1.01 (0.86 to 1.18)	0.94	0.93 (0.79 to 1.09)	0.36
	Black	5203	13.3	1.07 (0.98 to 1.18)	0.15	0.95 (0.87 to 1.05)	0.35
	Other	5299	9.8	0.76 (0.69 to 0.84)	<0.001	0.80 (0.72 to 0.89)	<0.001
Marital status (first recorded)	Married/cohabiting	5115	11.7	0.88 (0.80 to 0.97)	0.010	1.16 (1.04 to 1.28)	0.007
	Divorced/separated	2391	11.1	0.82 (0.72 to 0.94)	0.005	1.18 (1.02 to 1.36)	0.028
	Single	16 078	13.1	Reference		Reference
	Not recorded	4120	9.4	0.69 (0.61 to 0.77)	<0.001	0.82 (0.73 to 0.92)	0.001
Diagnosis	Schizophrenia and related	5860	15.5	2.11 (1.92 to 2.32)	<0.001	2.23 (2.02 to 2.46)	<0.001
	Bipolar affective disorder	2691	22.6	3.37 (3.03 to 3.76)	<0.001	3.42 (3.06 to 3.82)	<0.001
	Psychotic depression	767	14.0	1.87 (1.51 to 2.31)	<0.001	2.00 (1.61 to 2.48)	<0.001
	Personality disorder	2311	17.8	2.50 (2.21 to 2.82)	<0.001	2.39 (2.11 to 2.71)	<0.001
	Unipolar depression (without psychosis)	14 192	8.0	Reference		Reference
	Other affective disorder	1883	10.6	1.36 (1.16 to 1.60)	<0.001	1.35 (1.15 to 1.59)	<0.001

*Results adjusted for all the factors reported in this table.