Table 4.

Factors associated with presenteeism score 12 months later.

Baseline Predictors		GEE Linear Regression^†
Baseline Predictors		Coefficient	95% CI
Work	Job type (labor-intensive vs sedentary)	7.3	(3.8–10.7)^*
Work	Absenteeism, %	0.2	(0.02–0.3)^*
Clinical	Commencing biologic (yes vs no)	6.6	(2.1–11.1)^*
	Uveitis (yes vs no)	−0.5	(−4.5 to 3.6)
	Psoriasis (yes vs no)	3.8	(−2.6 to 10.2)
	Inflammatory bowel disease (yes vs no)	1.3	(−3.95 to 6.5)
	Dactylitis (yes vs no)	6.4	(−4.9 to 17.7)
	Peripheral joint involvement (yes vs no)	6.2	(1.9–10.6)^*
	BASDAI (score 0–10)	4.2	(3.6–4.9)^*
	BASFI (score 0–10)	3.7	(3.0–4.3)^*
	BASMI (score 0–10)	1.4	(0.3–2.5)^*
	BAS-G (score 0–10)	3.4	(2.8–4.0)^*
Patient	ASQoL (score 0–18)	2.0	(1.7–2.3)^*
	EQ-VAS (score 0–100)	−0.3	(−0.4 to −0.2)^*
	Activity impairment, %	0.4	(0.3–0.43)
	Spinal pain (score 0–10)	2.8	(2.2–3.4)^*
	Chalder Fatigue Scale (score 0–11)	2.3	(1.8–2.8)^*
	Sleep disturbance (score 0–20)	1.1	(0.8–1.4)^*
	HADS Anxiety (clinical/borderline vs none)	10.7	(7.2–14.2)^*
	HADS Depression (clinical/borderline vs none)	10.0	(5.9–14.1)^*

↵† Adjusted for age, sex, and deprivation.
↵* Eligible for forward stepwise model (p ≤ 0.2). GEE: generalized estimating equation; BASDAI: Bath Ankylosing Spondylitis Disease Activity Index; BASFI: Bath AS Functional Index; BASMI: Bath AS Metrology Index; BAS-G: Bath AS Global score; ASQoL: AS Quality of Life questionnaire; EQ-VAS: EuroQol visual analog scale; HADS: Hospital Anxiety and Depression Scale.