Table 3.

The pooled mean and mean difference of clinical data in spondyloarthritis patients with and without uveitis of the included studies.

Subgroup	Uveitis (+)		Uveitis (–)		Mean difference	95% CI	p value (I2)
	Pooled mean	95% CI	Pooled mean	95% CI
Delay diagnosis (y)	6.08	4.77 to 7.38	5.41	3.94 to 6.89	1.04	0.28 to 1.80	0.008 (83%)
ASDAS	2.47	2.31 to 2.64	2.32	2.15 to 2.50	0.18	0.11 to 0.25	< 0.001 (0%)
BASDAI	4.87	4.41 to 5.32	4.53	4.11 to 4.96	0.11	− 0.06 to 0.28	0.21 (76%)
BASFI	3.89	3.53 to 4.25	3.97	3.65 to 4.28	− 0.12	− 0.46 to 0.21	0.47 (92%)
CRP (mg/L)	15.78	8.38 to 23.18	14.53	8.69 to 20.38	1.48	− 0.17 to 3.14	0.08 (64%)
ESR (mm/h)	28.19	7.64 to 48.75	28.16	17.91 to 38.42	− 0.80	− 4.62 to 3.03	0.68 (90%)
ASDAS-CRP	2.42	2.26 to 2.59	2.31	2.11 to 2.51	0.17	0.10 to 0.24	< 0.001 (0%)
ASDAS-ESR	2.76	2.47 to 3.05	2.37	2.26 to 2.48	0.03	− 0.65 to 0.72	0.92 (94%)

Subgroup	BASDAI		BASFI		Study number
	Pooled mean	95% CI	Pooled mean	95% CI
≤ 2 years	4.46	4.32 to 4.61	2.92	2.48 to 3.37	1 (6)
> 2 years, ≤ 5 years	5.60	5.47 to 5.73	3.98	3.67 to  4.28	2 (22, 23)
> 5 years, ≤ 10 years	4.40	4.32 to 4.49	4.06	3.91 to 4.20	3 (15, 17, 19)
> 10 years	3.74	2.63 to 4.85	4.17	2.93 to 5.41	1 (18)