Table 1.
Incidence of IP in different studies
| First author, year, (ref) | Type of study | Sample size | Incidental Ptx (%) | Relation with postoperative hypocalcemia |
| Du et al. 2017 (5) | prospective | 341 | 10.3 | nr |
| Mc Goldrick et al. 2017, (10) | retrospective | 230 | 17.3 | nr |
| Lin et al, 2017, (11) | retrospective | 3186 | 6.4 | r |
| Manatakis et al. 2016, (12) | retrospective | 281 | 24.9 | nr* |
| Ozemir et al. 2016, (13) | retrospective | 417 | 13.4 | r |
| Applewhite et al. 2016, (14) | retrospective | 1767 | 16.2 | r |
| Sitges - Serra et al, 2016, (15) | prospective | 170 | 28 | r |
| Zhou et al. 2016, (16) | retrospective | 386 | 20 | r |
| Hone et al. 2016, (17) | prospective | 266 | 16 | ND |
| Praženica et al. 2014, (18) | retrospective | 1068 | 5.4 | r |
| Yazici et al. 2014, (19) | retrospective | 245 | 13.8 | nr |
| Ozogul et al. 2014, (20) | retrospective | 801 | 2.3 | r |
| Del Rio et al. 2014, (21) | retrospective | 538 | 4.8 | nr |
| Song et al. 2014, (22) | retrospective | 454 | 19.8 | r |
| Sheahan et al. 2013, (23) | prospective | 126 | 9.5 | nr |
| Nair et al. 2013, (24) | prospective | 806 | ND | r |
| Campos et al. 2012, (25) | retrospective | 442 | 2.93 | ND |
| Qasaimeh et al. 2011, (26) | retrospective | 233 | 8.6 | r |
| Khairy, Al-Saif. 2011, (27) | retrospective | 287 | 16.4 | r |
| Youssef et al. 2010, (28) | prospective | 207 | 12.6 | nr |
| Spiliotis et al. 2010, (29) | retrospective | 315 | 10.2 | r |
| Erbil et al. 2009, (30) | prospective | 440 | 10.9 | nr |
| Sorgato et al. 2009 (7) | retrospective | 882 | 7.9 | nr |
| Rajinikanth J et al. 2009, (31) | retrospective | 365 | 12.95 | r |
| Manouras et al. 2008, (32) | retrospective | 508 | 19.7 | nr |
| Page, Strunski, 2007, (33) | retrospective | 351 | 5.2 | nr |
| Abboud et al. 2007, (34) | retrospective | 307 | 12 | nr |
| Irkorucu et al. 2007, (35) | prospective | 273 | 3.7 | nr |
| Sippel et al. 2007, (36) | prospective | 513 | 6.4 | nr* |
| Gourgiotis et al. 2006, (37) | retrospective | 315 | 21.6 | nr |
| Sciumè et al. 2006, (38) | retrospective | 313 | 0.95 | nr |
| Rix, Sinha, 2006, (39) | retrospective | 126 | 17.4 | nr |
| Sakorafas et al. 2005, (40) | retrospective | 158 | 17.7 | nr |
| Lin et al. 2002, (41) | retrospective | 220 | 9.1 | nr |
| Sasson et al. 2001, (42) | retrospective | 144 | 15 | nr |
| Lee et al. 1999, (43) | retrospective | 414 | 11 | nr |
| Berghamaschi et al. 1998, (44) | retrospective | 1163 | 9 | nr |
*only biochemical hypoglycemia; ND= no data; r= related; nr= not related