Table 1 Characteristics of the included studies
From: Relationship between sublingual varices and hypertension: a systematic review and meta-analysis
N | Author, date | Country | Sample size case/control | Mean Age | Sex (%F) case/control | Hypertension frequency in case/control | Normotensive frequency in case/control |
|---|---|---|---|---|---|---|---|
1 | Accardo et al. (2021) [1] | Italy | 724/284 | 45–85 | 59.4/57 | 518/227 | 206/57 |
2 | Akkaya et al. (2019) [21] | Turkey | 186/505 | NR | 67.2/683 | 63/23 | 123/482 |
3 | Bergh et al. (2022) [33] | Sweden | 326/663 | Case: 68.8 ± 7.3 Control:65.3 ± 7.2 | 48.5/57.5 | 136/179 | 190/484 |
4 | Hedström et al. (2015) [48] | Sweden | 114/317 | 55.3 ± 10.9 | 56.4 | 57/63 | 57/254 |
5 | Baharvand et al. (2022) [37] | Iran | 91/60 | 47.58 ± 12.19 | 49 | 33/4 | 58/56 |
6 | Jafari et al. (2022) [6] | Iran | 271/207 | 74.5 | 50.2/67.6 | 103/74 | 168/133 |
7 | Shivakumar et al. (2020) [17] | India | 65/136 | 52.3 ± 11.5 | 52.3/33.8 | 45/30 | 20/106 |
8 | González-Álvarez et al. (2022) [20] | Spain | 162/336 | NR | 70.4/69.9 | 50/52 | 112/284 |
9 | İçöz et al. (2021) [49] | Turkey | 155 | 38.8 | 60.6 | 22/35 | 133/431 |
10 | Olufemi et al. (2016) [50] | Nigeria | 31/169 | 51.6 ± 0.9 | 44.5/44.5 | 28/72 | 3/97 |
11 | Jamali et al. (2023) [38] | Iran | 109/391 | Case: 43.3 ± 11.3 Control:42.7 ± 12.2 | 45/56 | 84/58 | 25/333 |
12 | Lazos et al. (2020) [2] | Argentina | 309/363 | 18–92 (median = 37.7) | 61.8/58.6 | 46/4 | 263/359 |