Table 2 Risk factors for initial visual loss: dichotomous variable.

Dichotomous variable	Sign present (%)	Symptoms/sign absent (%)	χ2 p value	OR	CI
Disc swelling	97.6	47.9	0.000	44.56	5.66–350.7
Hypertension	81.8	60.9	0.028	2.89	1.10–7.62
Polymyalgia	84.2	67.6	0.156	2.56	0.68–9.66
Diabetes mellitus	75	70.9	0.86	1.23	0.12–12.39
Jaw claudication	72.3	69.8	0.788	1.13	0.46–2.82
Diplopia	70	71.4	0.901	0.93	0.31–2.77
Giant cells on biopsy	69.6	73.5	0.693	0.83	0.32–2.14
Cholesterol	100	78.6	0.605	0.79	0.6–1.03
Muscle tenderness	67.6	73.6	0.535	0.75	0.30–1.88
Male sex	66.7	73.7	0.479	0.714	0.281–1.82
Stroke	60	71.8	0.573	0.59	0.09–3.76
Systemic features	63.6	78.3	0.126	0.49	0.19–1.23
Temple tenderness	63.6	78.3	0.126	0.49	0.19–1.23
Smoker	60.5	78.8	0.058	0.41	0.16–1.04
Headache	67.5	92.3	0.068	0.17	0.02–1.41