Table 2. Laboratory results.

	PedSjDn=19	Diagnostic adSjDn=32	PedSjD versus diagnostic adSjDP value	Trial adSjDn=42	PedSjD versus trial adSjDP value
IgG value, median (IQR), g/L	16.1 (13.7–20.0)*	16.6 (12.1–19.7)	0.82	17.9 (13.2–23.5)	0.39
IgG elevated†, n (%)	11 (64.7)*	17 (53.1)	0.44	27 (64.3)	0.98
RF-IgM value, median (IQR), IU/mL	18 (1.7–73)	23 (4–65)*	0.67	23 (11.8–58.3)	0.52
RF+ (>5 IU/mL), n (%)	12 (63.2)	23 (74.2)*	0.41	35 (83.3)	0.08
Anti-SSA+, n (%)	13 (68.4)	31 (96.9)	0.004	36 (85.7)	0.12
Anti-SSB+, n (%)	9 (47.4)	15 (46.9)	0.97	22 (52.4)	0.72
CRP>5, n (%), mg/L	2 (10.5)	9 (28.1)	0.18	7 (16.7)	0.71
ESR>15, n (%), mm/hour	6 (31.6)	22 (68.8)	0.010	28 (66.7)	0.011
C3<0.9, n (%), g/L	0 (0)	2 (6.5)*	0.52	6 (14.3)	0.16
C4<0.1, n (%), g/L	1 (5.3)*	0 (0)*	0.38	2 (4.8)	1.00
ANA+, n (%)	16 (88.9)	29 (90.6)	1.00	29 (85.3)	1.00

Significant p values are italicised and bold.

^*Missing data: 0–5.

^†IgG value elevated for age-related normal range.

adSjDadult-onset Sjögren’s diseaseANAantinuclear antibodiesC3complement 3C4complement 4CRPC reactive proteinESRerythrocyte sedimentation rateIgGimmunoglobulin GPedSjDpaediatric-onset Sjögren’s diseaseRFrheumatoid factorSSASjögren’s syndrome-related antigen ASSBSjögren’s syndrome-related antigen B