Table 1.
Characteristics of population-based studies on the prevalence of DES.
| Article number | First author, publication year | Province | Geographical area (latitude-longitude) | Rural/urban | Age range (year) | Sample size (N) | Case (n) | Checklist | Diagnosis standard | Sampling scheme | Prevalence definition | Response rate (%) | Total score |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Zhuang 2012 [7] | Guangdong | Southern-Eastern | Rural | 14–90 | 2475 | 154 | (1) signs, (2) BUT, (3) FL, (4) SIT | (1) combined with two of (2–4) | yes | yes | 88.39 | 5 |
| 2 | Xiao 2009 [8] | Guangxi | Southern-Western | Urban | over 20 | 10687 | 1179 | (1) signs, (2) BUT, (3) FL, (4) SIT | (1) combined with two of (2–4) | yes | yes | 92.04 | 5 |
| 3 | Sun 2010 [9] | Liaoning | Northern-Eastern | Rural | 20–80 | 1133 | 336 | (1) signs, (2) BUT, (3) FL, (4) SIT | (1) combined with two of (2–4) | yes | no | N/A | 3 |
| 4 | Hu 2009 [10] | Inner Mongolia | Northern-Central | Rural/urban | over 40 | 12537 | 595 | (1) signs, (2) BUT, (3) FL, (4) SIT | (1) combined with two of (2–4) | yes | no | N/A | 3 |
| 5 | Tian 2009 [11] | Shanghai | Southern-Eastern | Urban | 60–90 | 746 | 185 | (1) signs, (2) BUT, (3) FL, (4) SIT | (1) combined with two of (2–4) | yes | yes | 93.25 | 5 |
| 6 | Zhang 2010 [12] | Shanghai | Southern-Eastern | Urban | 45–75 | 1601 | 219 | (1) signs, (2) BUT, (3) FL, (4) SIT | (1) combined with two of (2–4) | yes | yes | N/A | 4 |
| 7 | Tian 2009 [13] | Shanghai | Southern-Eastern | Urban | 20–95 | 1085 | 326 | (1) signs, (2) BUT, (3) FL, (4) SIT | (1) combined with two of (2–4) | yes | yes | 85.7 | 5 |
| 8 | Chu 2011 [14] | Anhui | Southern-Central | Urban | 50–95 | 849 | 178 | (1) signs, (2) BUT, (3) FL, (5) SIT | (1) combined with two of (2–5) | yes | yes | 90.68 | 5 |
| 9 | Jie 2009 [15] | Beijing | Northern-Eastern | Rural/urban | 40–101 | 4439 | 411 | (1) signs, (2) BUT, (3) FL, (5) SIT | (1) combined with two of (2–5) | yes | yes | 83.4 | 5 |
| 10 | Lu 2008 [16] | Qinghai | Northern-Western | Rural | over 40 | 2229 | 965 | (1) signs, (2) BUT, (3) FL, (5) SIT | Significant symptoms for dry eye | yes | yes | 84.69 | 5 |
| 11 | Guo 2010 [17] | Qinghai | Northern-Western | Rural | 40–91 | 1816 | 909 | (1) signs, (2) BUT, (3) FL, (5) SIT | Significant symptoms for dry eye | yes | yes | 84.9 | 5 |
| 12 | Liu 2011 [18] | Beijing | Northern-Eastern | Urban | 20–90 | 1997 | 122 | (1) signs, (2) BUT, (3) FL, (5) SIT | (1) combined with two of (2–5) | no | yes | N/A | 3 |
BUT: break-up time; NA: not available; CI: confidence interval; SIT: Schirmer I test; FL: fluorescein score.