Increased occurrence of spinal fractures related to ankylosing spondylitis: a prospective 22-year cohort study in 17,764 patients from a national registry in Sweden

Table 1 Swedish national population data from the central bureau of Statistics Sweden, total patient count, and annual number of patients with ankylosing spondylitis and vertebral fractures in the SNHDR

Year	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008
population of Sweden	8414083	8458888	8527036	8590630	8644119	8692013	8745109	8816381	8837496	8844499	8847625	8854322	8861426	8882792	8909128	8940788	8975670	9011392	9047752	9113257	9182927	9256347
- inpatients	882217	890888	877573	882120	911614	899085	899100	885271	853826	836382	819397	813845	798583	787545	775556	771837	773543	776636	785526	798290	797357	803128
- all musculoskeletal diagnoses	64431	62847	62047	61594	66150	69730	68993	67297	63365	63054	63225	63451	60335	59913	60152	60442	62295	64202	65831	67730	67496	69378
- all ankylosing spondylitis (AS)	729	662	746	666	690	787	818	823	796	803	737	744	661	624	650	759	826	883	982	1037	1115	1226
- all fractures with AS	6	9	6	9	4	21	22	29	30	37	40	29	50	52	77	59	67	89	90	93	78	139
- cervical spine fractures and AS	4	4	3	5	3	10	9	13	11	14	22	11	20	20	32	26	31	31	37	27	27	40
- thoracic spine fractures and AS	0	3	3	1	0	2	2	6	7	9	3	8	10	9	12	12	6	15	13	25	15	35
- lumbar spine fractures and AS	1	2	0	1	0	7	10	4	4	7	7	3	9	8	9	4	6	10	8	6	9	13

ISSN: 1754-9493