Table 6.

Potential predictors of GCA in bivariate analyses, stratified by time from screening to diagnosis

Variables	Less than median (<20.7 years)		Greater than median (>20.7 years)
	OR	95% CI	OR	95% CI
BMI (per kg/m2)	0.81	0.70, 0.95	0.96	0.86, 1.08
Current smoking (yes vs no)a	0.59	0.24, 1.46	0.19	0.06, 0.57
Ever smoking (yes vs no)b	0.72	0.32, 1.62	0.44	0.19, 1.03
fB-glucose (per S.d.)	0.48	0.20, 1.17	0.25	0.09, 0.70
Cholesterol (per S.d.)	0.57	0.36, 0.90	0.59	0.37, 0.96
Triglycerides (per S.d.)	0.41	0.19, 0.88	0.48	0.24, 0.94
Hypertension (yes vs no)	0.68	0.30, 1.54	1.98	0.85, 4.59
Triceps skinfold index (per S.d.)	0.86	0.50, 1.49	1.22	0.73, 2.03

S.d. values: fB-glucose 1.5 mmol/l, cholesterol 1.0 mmol/l, triglycerides 0.8 mmol/l, triceps skinfold index 24.6.

^aCurrent smoking defined by the question, ‘Do you smoke daily?’ (yes or no) or a quantification of the number of cigarettes/day.

^bEver smoking defined by the question, ‘Have you ever in your life smoked daily for half a year?’ (yes or no).