Parental income as a marker for socioeconomic position during childhood and later risk of developing a secondary care-diagnosed mental disorder examined across the full diagnostic spectrum: a national cohort study

Table 2 Incidence rates and hazard ratios (HRs) for mental disorder diagnostic categories for the most upwardly mobile and the most downwardly mobile cohort members

	n	Incidence rate	Basic adjustment^a	Additional adjustment^b
Any mental disorder
The most upwardly mobile (quintile 1 at birth to quintile 5 at age 15)^c	1640	847.3	0.43 (0.41, 0.45)	0.62 (0.59, 0.66)
The most downwardly mobile (quintile 5 at birth to quintile 1 at age 15)^d	1331	973.2	1.48 (1.39, 1.57)	1.27 (1.19, 1.35)
Substance misuse disorders
The most upwardly mobile	204	98.5	0.24 (0.21, 0.28)	0.42 (0.36, 0.49)
The most downwardly mobile	213	143.6	2.22 (1.91, 2.59)	1.74 (1.48, 2.04)
Personality disorders
The most upwardly mobile	303	146.9	0.30 (0.27, 0.34)	0.49 (0.43, 0.55)
The most downwardly mobile	315	213.6	2.06 (1.82, 2.33)	1.68 (1.48, 1.92)
Broadly defined schizophrenia
The most upwardly mobile	236	114.1	0.42 (0.37, 0.48)	0.58 (0.51, 0.67)
The most downwardly mobile	184	124.1	1.62 (1.38, 1.90)	1.35 (1.13, 1.60)
Mood disorders
The most upwardly mobile	669	327.6	0.61 (0.56, 0.66)	0.84 (0.77, 0.91)
The most downwardly mobile	503	343.8	1.36 (1.24, 1.49)	1.15 (1.04, 1.28)
Anxiety/somatoform disorders
The most upwardly mobile	946	469.2	0.43 (0.40, 0.46)	0.63 (0.59, 0.67)
The most downwardly mobile	817	569.1	1.62 (1.50, 1.74)	1.40 (1.29, 1.51)
Eating disorders
The most upwardly mobile	222	107.5	1.23 (1.06, 1.43)	1.29 (1.10, 1.50)
The most downwardly mobile	151	101.8	0.92 (0.78, 1.09)	0.90 (0.76, 1.08)

Incidence rate is reported per 100,000 person years
^aBasic adjustment—hazard ratios adjusted for gender, birth year and calendar time
^bAdditional adjustment—hazard ratios adjusted for gender, birth year, calendar time, parental mental disorders, parental educational attainment level, degree of urbanicity at birth and number of changes in child-parental separation status
^cThe reference group are those persons who were born and remained in quintile 5 at age 15
^dThe reference group are those persons who were born and remained in quintile 1 at age 15

ISSN: 1741-7015