Table 2.
Reasons for excluding retrieved articles on cross-sectional studies
| Study | Reasons for exclusion |
|---|---|
| Ahlstrom H, et al. (1990) [6] | < 20 controls |
| Algin O, et al. (2009) [25] | < 20 controls |
| Algin O, et al. (2010) [26] | < 20 controls |
| Baraliakos X, et al. (2005) [27] | No controls |
| Bejia I, et al. (2004) [28] | < 20 cases |
| Blum U, et al. (1996) [29] | Field strength, < 1.5 Tesla |
| Bochkova AG, et al. (2010) [30] | No controls |
| Bollow M, et al. (1993) [31] | Double publication on Bollow et al. [10] |
| Bollow M, et al. (1994) [32] | Double publication on Bollow et al. [10] |
| Bozgeyik Z, et al. (2008) [33] | No controls |
| Braun J, et al. (1994) [34] | < 20 controls |
| Braun J, et al. (1998) [35] | Reference standard (HLA-B27 status) not a clinical diagnosis |
| Bredella MA, et al. (2006) [36] | No controls |
| Chung H Y, et al. (2011) [37] | No controls |
| Docherty P, et al. (1992) [38] | < 20 controls |
| Friedburg H, et al. (1987) [39] | No controls |
| Gleeson TG, et al. (2005) [40] | < 20 cases |
| Gupta AD, et al. (2009) [41] | < 20 controls |
| Hanly JGJ, et al. (1994) [42] | < 20 controls |
| Heuft-Dorenbosch L, et al. (2006) [43] | Reference standard (plain radiographic) not a clinical diagnosis |
| Heuft-Dorenbosch L, et al. (2006) [44] | No controls |
| Heuft-Dorenbosch L, et al. (2007) [45] | No controls |
| Inanc N, et al. (2005) [46] | Reference standard (plain radiographic) not a clinical diagnosis |
| Jevtic V, et al. (1996) [47] | No controls |
| Liao Z, et al. (2009) [48] | No MRI of the control group |
| Liao Z, et al. (2011) [49] | No controls |
| Luukkainen RK, et al. (2007) [50] | No controls |
| Marc V, et al. (1997) [51] | < 20 controls |
| McNally EG, et al. (2001) [52] | < 20 cases |
| Muche B, et al. (2003) [53] | No controls |
| Murphey MD, et al. (1991) [54] | < 20 controls |
| Orchard TR, et al. (2009) [55] | < 20 cases |
| Peterova V et al. (2006) [56] | No controls |
| Puhakka KB, et al. (2003) [57] | No controls |
| Remy, et al. (1996) [58] | No controls |
| Rennie WJ, et al. (2009) [59] | < 20 controls |
| Rudwaleit M, et al. (2009) [60] | < 20 controls |
| Rudwaleit M, et al. (2009) [8] | Insufficient result presentation |
| Rudwaleit M, et al. (2009) [61] | Insufficient result presentation |
| Sreedhar C, et al. (2006) [62] | < 20 cases |
| Weber U, et al. (2007) [63] | < 20 controls |
| Weber U, et al. (2010) [64] | Double publication on Weber et al. [13] |
| Wecbach et al. (2009) [65] | No controls |
| Wienands K, et al. (1990) [66] | No controls |
| Williamson L, et al. (2004) [67] | Reference standard (orthopedic test) not a clinical diagnosis |
| Wittram C, et al. (1996) [68] | < 20 controls |
| Wittram C, et al. (1996) [69] | < 20 controls |
| Yu W, et al. (1998) [70] | < 20 controls |
Studies may have met exclusion criteria other than those listed in the table. MRI, magnetic resonance imaging.