Number of patients, mean symptom duration and disease duration per total number of new syndesmophytes and/or bridges at 2 and 4 years
| 2 years | 4 years | |||||
|---|---|---|---|---|---|---|
| Total number of new (bridging) syndesmophytes | Number of patients* (n=132) | Mean duration of symptoms (n=128) | Mean duration of disease since diagnosis (n=127) | Number of patients* (n=132) | Mean duration of symptoms (n=128) | Mean duration of disease since diagnosis (n=127) |
| 0 | 88 (42+/46−) | 19.5 (11.2) | 10.7 (8.2) | 69 (25+/44−) | 19.7 (11.3) | 10.6 (8.2) |
| 1 | 11 (7+/4−) | 21.7 (9.8) | 12.9 (5.8) | 13 (10+/3−) | 21.3 (10.1) | 12.5 (6.5) |
| 2 | 9 (8+/1−) | 30.6 (10.3) | 14.4 (13.7) | 13 (11+/2−) | 23.3 (11.9) | 11.7 (8.5) |
| 3 | 9 (9+/0−) | 18.4 (8.7) | 9.2 (9.4) | 8 (8+/0−) | 23.6 (12.3) | 13.6 (11.7) |
| 4 | 4 (4+/0−) | 20.1 (17.3) | 16.3 (16.2) | 8 (8+/0−) | 20.0 (12.7) | 15.1 (13.2) |
| 5 | 3 (3+/0−) | 44.2 (3.1) | 36.0 (–) | 5 (4+/1−) | 20.6 (7.0) | 7.3 (3.8) |
| 6 | 3 (3+/0−) | 29.5 (19.5) | 21.3 (17.3) | 3 (3+/0−) | 33.7 (25.0) | 28.3 (21.0) |
| 7 | 3 (3+/0−) | 23.0 (12.1) | 12.7 (6.9) | 3 (2+/1−) | 28.7 (18.9) | 12.0 (8.5) |
| 8 | 1 (1+/0−) | 25.5 (–) | 15.5 (–) | 5 (5+/0−) | 22.5 (14.7) | 13.4 (13.6) |
| 9 | 0 (0+/0−) | – | – | 1 (1+/0−) | 15.8 (–) | 5.0 (–) |
| 10 | 1 (1+/0−) | 11.8 (–) | 9.0 (–) | 2 (2+/0−) | 24.9 (0.6) | 8.4 (9.1) |
| 11 | 0 (0+/0−) | – | – | 1 (1+/0−) | 16.2 (–) | 15.2 (–) |
| 16 | 0 (0+/0−) | – | – | 1 (1+/0−) | 11.8 (–) | 9.0 (–) |
↵* In this column, the number of patients is shown per total number of new (bridging) syndesmophytes (stratified for the presence (+) or absence (−) of existing syndesmophytes at baseline). (−) Means that only data for one patient were available, no SD could be calculated.