Table 3.

Predictors for employment among patients with RA

Predictor	Studies	Participants	Chi²	p	I² (%)	OR	95% CI
Age (< = 50/ > 50 years)	5	2623	74.4	< 0.001	95	3.56	2.97, 4.26
Gender (female/male)	28	16248	74.1	< 0.001	64	0.58	0.53, 0.62
Educational level (college/below college)	14	5117	20.2	0.09	35	2.25	1.96, 2.59
Race (Caucasian/not Caucasian)	8	3197	12.0	0.10	42	1.13	0.90, 1.42
Job type (not manual/manual)	8	2366	13.8	0.06	49	2.38	1.89, 3.00
Comorbidities (not present/present)	4	1932	4.2	0.25	28	1.74	1.41, 2.14
MTX ever (no/yes)	5	3191	5.44	0.25	26	0.87	0.73, 1.03
Biological treatment ever (no/yes)	6	11960	132	< 0.001	96	0.89	0.81, 0.98
Prednisolone ever (no/yes)	2	633	1.05	0.3	5	0.41	0.25, 0.68
Predictor	Studies	Participants	Mean difference				95% CI
Age (low/high age)	17	4361	-6.59				-7.03, -6.15
Disease duration (short/long)	8	1998	-1.54				-2.05, -1.03
HAQ score (low/high)	5	1652	-0.48				-0.55, -0.40
Joint pain, VAS score (low/high)	4	906	-0.92				-1.25, -0.59
SF 36 (low/high)	2	309	7.57				5.03, 10.1
DAS 28 (low/high)	2	568	-0.27				-0.48, -0.06