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. 2016 Apr 8;6(4):e009847. doi: 10.1136/bmjopen-2015-009847

Table 1.

Characteristics and stratified data of the included studies

Subgroup
First author and year published Survey year Type (special investigation/contains relative data) Location Methods of random sampling Female (%) Age Male Female 15–59 years ≥60 years Urban Rural
Yang et al (2015)15 2010 Special Province Cluster 64 60–95 130/668 417/1203 547/1871 547/1871
Chinese CDC (2014)43 2010 Relative National Multistage 66 ≥60 1434/5085 3306/9923 4470/15 008
Cai et al (2014)33 2010 Special Province Multistage 77 ≥18 1031/2699 3859/8892 3655/8447 1235/3144 4890/11 591
Chen et al (a) (2014)32 2008–2010 Special Province Multistage 100 45–65 12 730/27 874 11 457/25 033 1273/2843 12 730/27 874
Chen et al (b) (2014)68 2013 Relative Province Multistage 68 15–69 64/179 189/371
Li et al (a) (2014)31 2011 Special Province Multistage 71 ≥18 162/227 345/549
Li et al (b) (2014)30 2011 Special Province Multistage 75 ≥18 266/717 856/2124 758/1897 190/483 1122/2841
Qi et al (2014)29 2012 Special Province Multistage 77 15–74 1110/3055 4297/10 177 4692/11 185 169/623
Wang et al (2014)58 2011 Relative Province Multistage 65 ≥18 1905/4045 4090/7411 5238/9786 661/1670 1855/3291 4420/7486
Yan et al (2014)57 2012 Relative Province Multistage 67 15–69 140/522 417/1044 321/700 373/866
Li, S.J et al (2013)54 2011 Relative Province Multistage 81 ≥18 230/558 1070/2279 2813/3629 1300/2837
Fan et al (2013)69 2010 Relative Province Multistage 71 15–69 107/166 202/417
Li et al (2013)45 2012 Relative Province Multistage 15–69
Liu et al (2013)34 2012 Special Province Multistage 65 ≥15 113/262 233/491 322/653 – 346/753
Wu et al (2013)70 2010 Relative Province Multistage 66 ≥18 69/144 141/285 182/366 28/63
Zhang et al (2013)35 2010 Special Province Multistage 67 15–69 413/1293 1171/2901 1525/3967 59/227 1584/4194
Cai, L. et al (2012)37 2010 Special Province Multistage 78 ≥18 901/1289 3469/4567 775/1194 4370/5856
Feng et al (2012)52 2010 Relative Province Multistage 66 ≥15 156/257 295/508 403/687 551/765
Han et al (2012)56 Relative Province Multistage 88 ≥18 26/104 309/794 335/898
Huang et al (2012)51 2010 Relative Province Multistage 68 15–65 50/103 77/221 127/324
Li et al (2012)47 2010 Relative Province Cluster 62 35–86 35/84 62/138 97/222
Sun et al (2012)50 2010 Relative Province Stratified 81 ≥18 76/183 248/748 266/589 58/159 324/931
Wang et al (a) (2012)71 2010 Relative Province Multistage 74 15–69 131/415 501/1159 464/1122 27/93
Wang et al (b) (2012)55 2010 Relative Province Multistage 68 ≥15 582/1521 1258/3197 1605/3914 235/804 1840/4718
Wei et al (2012)46 2010 Relative Province Cluster 61 ≥15 99/220 134/345 233/565
Xu et al (2012)36 2010 Special Province Multistage 69 ≥15 293/467 613/1047 513/821 420/806
Feng et al (2011)62 2010 Relative Province Multistage 99 ≥18 1/5 243/440
Meng et al (2011)59 2007 Relative Province Multistage 66 15–69 254/853 519/1647 417/1118 356/1380
Chinese CDC (2010)18 2007 Relative National Multistage 72 15–69 3632/9879 10 546/26 145 12 116/69 768 1384/4659 5470/14 341 8708/21 683
GATS China (2010)6 2010 Special National Multistage 69 ≥15 2045/2760 4514/6305
Chinese CDC (2009)38 2004 Special National Multistage 79 18–69 1501/4842 6016/17 747 6243/17 929 612/2519 3047/8809 4470/13 780
Chen et al (2009)72 2007 Relative Province Multistage 77 15–69 207/585 727/1950
Zhou et al (2009)16 2008 Relative Province Stratified 79 ≥15 107/135 457/518 564/653
Wang et al (2008)17 2004 Special Province Multistage 71 18–69 646/2358 1673/5784 2022/7079 211/1063 2391/8142
Jiang et al (2007)48 2004–2005 Relative Province Cluster ≥18 11 037/15 110
Su et al (2007)53 2006 Relative Province Multistage 74 ≥18 519/727 730/2068 1240/2523 81/272 1249/2795
Wang et al (2007)60 2004 Relative Province Multistage 64 15–69 792/2100 1641/3699 1268/3054 1222/2244
Han et al (2006)40 2002 Special Province Multistage 100 15–94 2886/3500 2886/3500
Huang et al (2006)49 2002 Relative Province Cluster 93 ≥40 298/354 3895/5300 1559/2201 500/1192 3393/5654
Ying et al (2006)39 2002 Special Province Multistage 100 15–86 814/1000 619/753 81/110 814/1000
Zhang et al (2006)61 2002 Relative Province Multistage 69 ≥15 437/2184 1823/4899 1908/5789 310/1242 1768/3850 1441/3764
Ma et al (county team)(2006)44 2002 Relative National Multistage 70 ≥15 9957/38 167 47 946/87 975 43 136/102 170 6108/21 021 29 236/47 792 56 699/89 991
Yang et al (2005)41 2002 Special National Multistage 74 15–69 1323/2780 4169/7635
Yao et al (2002)42 1999 Special Province Unclear 66 ≥18 292/1244 750/2389 992/3369 70/264 1042/3633
Wen et al (1999)73 1996 Relative Province Multistage ≥15
Lin et al (1997)74 1995 Relative Province Multistage 75 15–69 468/1193 1537/3641