Table 1.
Baseline characteristics for included studies in present meta-analysis investigating the correlation of Interleukin-6 and Interleukin-17serum levels with ankylosing spondylitis
| First author | Year | Country | Ethnicity | Protein | Sample size | Gender (M/F) | Age (years) | Method | ||
|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||
| Case | Control | Case | Control | |||||||
| Chen SZ [31] | 2013 | China | Asians | IL-6 | Large | 52/9 | 30/6 | 25.0 ± 8.2 | 25.0 ± 7.0 | ELISA |
| Chen GY [30] | 2013 | China | Asians | IL-6 | Small | 29/12 | - | 29.5 (15-59) | - | ELISA |
| Londono J [18] | 2012 | Colombia | Caucasians | IL-6 | Large | 43/19 | - | - | - | ELISA |
| Limon-Camacho L [10] | 2012 | Mexico | Caucasians | IL-6 | Small | 38/10 | - | - | - | ELISA |
| Mei Y [38] | 2011 | China | Asians | IL-6 | Large | 41/9 | 35/8 | 28.1 ± 8.9 | 25.3 ± 6.7 | ELISA |
| Li GQ [34] | 2010 | China | Asians | IL-6 | Small | 25/5 | 25/5 | 22.4 ± 5.2 | 23.6 ± 5.9 | ELISA |
| Bal A [29] | 2007 | Turkey | Caucasians | IL-6 | Large | - | - | - | - | ELISA |
| Gratacos J [32] | 1999 | Spain | Caucasians | IL-6 | Small | 12/2 | 15/5 | 33 ± 1 | 31 ± 1 | ELISA |
| Chen SZ [31] | 2013 | China | Asians | IL-17 | Large | 52/9 | 30/6 | 25.0 ± 8.2 | 25.0 ± 7.0 | ELISA |
| Chen GY [30] | 2013 | China | Asians | IL-17 | Small | 29/12 | - | 29.5 (15-59) | - | ELISA |
| Londono J [18] | 2012 | Colombia | Caucasians | IL-17 | Large | 43/19 | - | - | - | ELISA |
| Limon-Camacho L [10] | 2012 | Mexico | Caucasians | IL-17 | Small | 38/10 | - | - | - | ELISA |
| Chen WS [3] | 2012 | China | Asians | IL-17 | Small | - | - | - | - | ELISA |
| Sun Y [36] | 2011 | China | Asians | IL-17 | Small | 15/5 | 6/14 | 24.4 (17-38) | - | ELISA |
| Mei Y [38] | 2011 | China | Asians | IL-17 | Large | 41/9 | 35/8 | 28.1 ± 8.9 | 25.3 ± 6.7 | ELISA |
| Li GQ [34] | 2010 | China | Asians | IL-17 | Small | 25/5 | 25/5 | 22.4 ± 5.2 | 23.6 ± 5.9 | ELISA |
| Li CM [33] | 2010 | China | Asians | IL-17 | Large | 45/17 | 35/10 | 28.6 | 39.1 | ELISA |
| Stebbings SM [35] | 2009 | New Zealand | Caucasians | IL-17 | Small | 14/7 | 14/7 | 44.9 ± 15.1 | 43.4 ± 16.9 | ELISA |
| Wendling D [37] | 2008 | France | Caucasians | IL-17 | Small | - | - | 39.9 | 41.2 | ELISA |
M: male, F: female, ELISA: enzyme-linked immunosorbent assay.