Table 6. Number of patients with systemic lupus erythematosus and controls hospitalized over an eight-year period preceding the index date.

Years preceding index date	Group, number (%)		P
	Patients with SLE	Controls
	n = 337	n = 1,348
8	25 (7.4)	45 (3.3)	<0.001
7	28 (8.3)	53 (3.9)	<0.001
6	30 (8.9)	52 (3.9)	<0.001
5	32 (9.5)	54 (4.0)	<0.001
4	36 (10.7)	63 (4.7)	<0.001
3	34 (10.1)	56 (4.2)	<0.001
2	30 (8.9)	70 (5.2)	<0.001
1	167 (49.6)	55 (4.1)	<0.001

SLE, systemic lupus erythematosus.