- Basic characteristics of the included studies.
| Authors | Years | Designs | Countries | Age | Gender (male/female) | Sample sizes | Quality scores | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Hypothyroidism | Euthyroidism | Hypothyroidism | Euthyroidism | Hypothyroidism | Euthyroidism | |||||
| Drechsler et al14 | 2014 | cohort study | German | 66.4±8.8 | 65.3±8.5 | 10/6 | 446/335 | 16 | 781 | 8 |
| Karch et al16 | 2014 | cohort study | UK | 59.8 | 57.0 | 6472/28435 | 29817/119815 | 34907 | 149632 | 9 |
| Karakurm et al15 | 2007 | cohort study | Turkish | 67.2±1 | 68.4±11 | 109/140 | 53/49 | 10 | 341 | 7 |
| Schultz et al18 | 2011 | cohort study | Denmark | 69.5 | 67.5 | 5/26 | 243/306 | 31 | 549 | 9 |
| Rodondi et al17 | 2005 | cohort study | US | 74.8±2.7 | 74.7±2.9 | 151/187 | 1188/1204 | 338 | 2392 | 8 |
| Dorr et al13 | 2008 | cross-sectional study | Pomerania | 64.00 | 61.0 | 129/97 | 1010/829 | 226 | 1839 | 9 |
| Benwenga et al12 | 2019 | cross-sectional study | Italy | 65.6±12.7 | 14/100 | 47 | 9 | 6 | ||