Table 1 Descriptive characteristics of the included studies
From: The relationship between diabetes and the dementia risk: a meta-analysis
First author (Publication year) | Study location | Sample size | Gender(male/female) | Age | Type and of diabetics and number of cases | Diagnostic criteria for dementia | Regression method | Follow-up duration(year) | QR |
|---|---|---|---|---|---|---|---|---|---|
Zheng (2021) [15] | Britain | 457,902 | 238,567/219,335 | 64.5 ± 10.8 | Type 2 diabetes (372,287) |  | Cox | 6 ± 7.5 | 8 |
Lee (2022) [16] | Republic of Korea | 769,554 | 468,658/300,896 | > 40 | Not classified | ICD-10 | Cox | 6.9 ± 0.815 | 7 |
Kuo (2018) [17] | Taiwan, China | 33,387 | 18,229/15,158 | 48.74 ± 9.79 | Type 1 diabetes (1077) | ICD-9 | Cox | Inadequate follow-up time | 6 |
Jia (2021) [18] | China | 4583 | 1957/2626 | 71.32 ± 5 | Not classified (658) | DSM-IV | Logistic | Not reported | 12 |
Gennip (2021) [19] | Netherlands | 87,856 | 44,455/43,401 | 57.1 ± 8.2 | Type 2 diabetes (10,663) | ICD-9 ICD-10 | Cox | 9 ± 0.9 | 9 |
Chin (2016) [20] | Republic of Korea | 1957 | 920/1037 | 67.5 ± 5.5 | Type 2 diabetes (1957) | KCD-6 | Cox | 3.4 ± 0.9 | 8 |
Ma (2015) [21] | China | 8213 | 4369/3844 | 75.81 ± 0.52 | Not classified (1134) | DSM-IIIR | Cox | 4.17 ± 1.15 | 8 |
Frison (2019) [22] | France | 8328 | 3306/5022 | 73.5 ± 5.778 | Not classified (809) | DSM-IV | Cox | 8.3 ± 5.481 | 8 |
Salinas (2016) [23] | Mexico | 1193 | 415/778 | 73.2 ± 5.9 | Type 2 diabetes (280) | DRG DSM-IV | Poisson | 3 | 7 |
Secnik (2017) [24] | Sweden | 29,630 | 14,371/15,259 | 78.8 ± 67.3 | Type 2 diabetes (4,881) | ICD-10 | Logistic | Not reported | 11 |
Javanshiri (2018) [25] | Sweden | 268 | 113/155 | 82 ± 16.3 | Not classified | the NationalInstitute on Aging /Reagan Institute (1997) |  | No follow-up | 10 |
Amidei (2021) [26] | Britain | 10,095 | 6794/3301 | 76.8 ± 6 | Type 2 diabetes (1710) | ICD-10 | Cox | 31.7 ± 1.111 | 9 |
MScPH (2021) [27] | Australia | 11,140 | 6406/4734 | 65.8 ± 6.4 | Type 2 diabetes | DSM-IV | logistic | Median: 5 | 7 |
Kim (2022) [28] | Republic of Korea | 8,400,950 | 824,028/663,342 | < 5, 61.4 ± 10.1; > 5, 64.6 ± 9.1 | Not classify Type 1 and Type 2 diabetes, with more cases of Type 2 diabetes | ICD-10 | Cox | Average: 5.94 | 7 |
Alkabbani (2022) [29] | Canada | 278,812 | 153,235/125,577 | 40–70 | Type 2 diabetes (13,970) | BC health care data, ICD-10 (ICD-9, ICD-10-CA) | Cox | 5.03 ± 5.7 | 8 |