Skip to main content

Table 2 Incidence of psychiatric diagnoses per 1000 person years (pyrs) and incidence rate ratios (IRRs) in juvenile idiopathic arthritis (JIA) patients compared to controls

From: Psychiatric disorders in incident patients with juvenile idiopathic arthritis - a case-control cohort study

Psychiatric Diagnoses
(ICD-10)
JIA
(n = 4180)
n (%)
JIA
Incidence/1000 pyrs
(95% Cl)
Controls
(n = 12,512)
n (%)
Controls
Incidence/1000 pyrs
(95% Cl)
IRR
(95% Cl)
Mental and behavioural disorders due to psychoactive substance use
(F10–19)
 Females 46 (1.10) 2.00 (1.47, 2.67) 123 (0.98) 1.78 (1.48, 2.13) 1.12 (0.80, 1.57)
 Males 24 (0.57) 1.72 (1.10, 2.56) 89 (0.71) 2.13 (1.71, 2.62) 0.81 (0.52, 1.26)
Psychotic disorders (F20–29)
 Females 24 (0.57) 1.04 (0.67, 1.55) 33 (0.26) 0.48 (0.33, 0.67) 2.19 (1.29, 3.70)
 Males 7 (0.17) 0.50 (0.20, 1.03) 35 (0.28) 0.83 (0.58, 1.16) 0.60 (0.27, 1.35)
Mood (affective) disorders (F30–39)
 Females 279 (6.67) 12.86 (11.39, 14.46) 493 (3.94) 7.33 (6.70, 8.00) 1.75 (1.52, 2.03)
 Males 63 (1.51) 4.59 (3.52, 5.87) 149 (1.19) 3.59 (3.04, 4.22) 1.28 (0.85, 1.71)
Neurotica, stress-related and somatoform disorders (F40–48)
 Females 335 (8.01) 15.50 (13.89, 17.25) 510 (4.07) 7.57 (6.93, 8.25) 2.05 (1.79, 3.45)
 Males 100 (2.39) 7.33 (5.97, 8.92) 171 (1.37) 4.13 (3.54, 4.80) 1.77 (1.39, 2.27)
Behavioural syndromes associated with physiological disturbances and physical factors (F50–59)
 Females 100 (2.39) 4.42 (3.60, 5.38) 175 (1.39) 2.55 (2.19, 2.96) 1.73 (1.35, 2.22)
 Males 34 (0.81) 2.44 (1.69, 3.41) 29 (0.24) 0.69 (0.46, 0.99) 3.55 (2.16, 5.83)
Disorders of adult personality and behaviour (F60–69)
 Females 26 (0.62) 1.13 (0.74, 1.65) 61 (0.49) 0.88 (0.67, 1.13) 1.28 (0.81, 2.02)
 Males 8 (0.19) 0.57 (0.25, 1.12) 19 (0.15) 0.45 (0.27, 0.70) 1.26 (0.55, 2.88)
Disorders of psychological development (F80–89)
 Females 98 (2.34) 4.45 (3.62, 5.41) 169 (1.35) 2.47 (2.11, 2.87) 1.80 (1.40, 2.31)
 Males 94 (2.25) 7.06 (5.71, 8.63) 245 (1.96) 6.04 (5.30, 6.84) 1.17 (0.92, 1.49)
Childhood behavioural and emotional disorders (F90–98)
 Females 202 (4.83) 9.16 (7.94, 10.51) 325 (2.61) 4.79 (4.28, 5.34) 1.91 (1.60, 2.28)
 Males 145 (3.47) 10.88 (9.18, 12.81) 299 (2.39) 7.39 (6.58, 8.28) 1.47 (1.20, 1.80)
  1. a phobic, anxiety, obsessive-compulsive