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Table 1 The prevalence (%) of thalassemia carriers among different household register population of cities of Guangdong, China

From: High prevalence of thalassemia in migrant populations in Guangdong Province, China

Sampled cites of Guangdong Native city residents in the province Migrants from within the province Immigrants from outside the province Total Statistic values
Tested individuals Thalassemia carriers Prevalence (%95 CI) Tested individuals Thalassemia carriers Prevalence (%95 CI) Tested individuals Thalassemia carriers Prevalence (%95 CI) Tested individuals Thalassemia carriers Prevalence (%95 CI)
East Area             
Chaozhou 737 84 11.40 48 4 8.33 202 15 7.43 987 103 10.44 χ2 = 2.91,
Raoping (9.11, 13.68) (0.55, 16.11) (3.83, 11.02) (8.54, 12.33) P > 0.05
Jieyang 1318 135 10.24 108 12 11.11 54 5 9.26 1480 152 10.27 χ2 = 0.14,
Puning (8.61, 11.87) (5.21, 17.01) (1.57, 16.95) (8.73, 11.81) P > 0.05
Shantou 620 46 7.42 800 76 9.50 81 9 11.11 1501 131 8.73 χ2 = 2.51,
Jinping (5.37, 9.47) (7.48, 11.52) (4.30, 17.92) (7.31, 10.15) P > 0.05
Shanwei 1118 123 11.00 60 9 15.00 51 4 7.84 1229 136 11.07 χ2 = 1.49,
Haifeng (9.18, 12.83) (6.01, 23.99) (0.50, 15.18) (9.32, 12.81) P > 0.05
Total 3793 388 10.23 1016 101 9.94 388 33 8.51 5197 522 10.04 χ2 = 1.17,
(9.27, 11.19) (8.11, 11.77) (5.74, 11.27) (9.23, 10.86) P > 0.05
Montain Area             
Heyuan 1346 265 19.69 136 29 21.32 91 15 16.48 1573 309 19.64 χ2 = 0.82,
District (17.57, 21.80) (14.47, 28.17) (8.90, 24.07) (17.69, 21.60) P > 0.05
Meizhou 934 199 21.31 26 5 19.23 42 8 19.05 1002 212 21.16 χ2 = 0.18,
Xingning (18.69, 23.92) (4.16, 34.30) (7.23, 30.86) (18.64, 23.67) P > 0.05
Qingyuan 1165 237 20.34 88 15 17.05 92 16 17.39 1345 268 19.93 χ2 = 0.96,
Yingde (18.04, 22.64) (9.23, 24.86) (9.69, 25.10) (17.80, 22.05) P > 0.05
Shaoguan 981 185 18.86 164 20 12.20 139 17 12.23 1284 222 17.29 χ2 = 7.15,
District (16.42, 21.29) (7.21, 17.18) (6.81, 17.65) (15.23, 19.35) P < 0.05
Yunfu 1048 265 25.29 295 67 22.71 95 11 11.58 1438 343 23.85 χ2 = 9.28,
Luoding (22.67, 27.90) (17.96, 27.47) (5.18, 17.98) (21.66, 26.04) P < 0.01
Total 5474 1151 21.03 709 136 19.18 459 67 14.60 6642 1354 20.39 χ2 = 11.50,
(19.95, 22.10) (16.30, 22.07) (11.38, 17.81) (19.42, 21.35) P < 0.05
The Pearl River Delta             
Dongguan 959 130 13.56 412 76 18.45 111 6 5.41 1482 212 14.30 χ2 = 13.38,
District (11.40, 15.71) (14.72, 22.17) (1.22, 9.59) (12.53, 16.08) P < 0.01
Foshan 847 123 14.52 466 93 19.96 100 11 11.00 1413 227 16.07 χ2 = 8.63,
(16.35, 23.57) (4.90, 17.10) (14.16, 17.97) P < 0.05
Nanhai (12.16, 16.88)
Guangzhou 756 93 12.30 375 64 17.07 96 9 9.38 1227 166 13.53 χ2 = 6.40,
Panyu (9.97, 14.63) (13.28, 20.86) (3.57, 15.18) (11.62, 15.43) P < 0.05
Huizhou 854 170 19.91 502 69 13.75 118 9 7.63 1474 248 16.82 χ2 = 16.33,
District (17.24, 22.57) (10.75, 16.74) (2.86, 12.39) (14.92, 18.72) P < 0.001
Jiangmen 1282 231 18.02 121 20 16.53 47 5 10.64 1450 256 17.66 χ2 = 1.81,
Xinhui (15.93, 20.11) (9.94, 23.11) (1.87, 19.41) (15.70, 19.61) P > 0.05
Shenzhen 194 29 14.95 913 149 16.32 174 14 8.05 1281 192 14.99 χ2 = 7.85,
Baoan (9.96, 19.94) (13.93, 18.70) (4.02, 12.07) (13.04, 16.93) P < 0.05
Zhaoqing 1143 215 18.81 191 46 24.08 85 15 17.65 1419 276 19.45 χ2 = 3.09,
Sihui (16.56, 21.06) (18.05, 30.12) (9.58, 25.71) (17.40, 21.50) P > 0.05
Zhongshan 705 85 12.06 174 32 18.39 569 65 11.42 1448 182 12.57 χ2 = 6.21,
District (9.67, 14.45) (12.66, 24.12) (8.82, 14.02) (10.87, 14.27) P < 0.05
Zhuhai 675 115 17.04 382 72 18.85 106 15 14.15 1163 202 17.37 χ2 = 1.40,
Doumen (14.22, 19.86) (14.95, 22.75) (7.55, 20.75) (15.20, 19.54) P > 0.05
Total 7415 1191 16.06 3536 621 17.56 1406 149 10.60 12357 1961 15.87 χ2 = 37.06,
(15.23, 16.89) (16.31, 18.81) (9.00, 12.20) (15.23, 16.51) P < 0.001
West Area              
Maoming 1292 240 18.58 47 5 10.64 75 10 13.33 1414 255 18.03 χ2 = 3.1,
Huazhou (16.47, 20.69) (1.87, 19.41) (5.68, 20.99) (16.04, 20.03) P > 0.05
Yangjiang 1393 355 25.48 74 4 5.41 54 8 14.81 1521 367 24.13 χ2 = 18.13,
Yangchun (23.21, 27.76) (0.28, 10.53) (5.39, 24.24) (21.99, 26.27) P < 0.001
Zhanjiang 982 166 16.90 265 39 14.72 101 22 21.78 1348 227 16.84 χ2 = 2.62,
Lianjiang (14.57, 19.24) (10.47, 18.96) (13.77, 29.79) (14.85, 18.83) P > 0.05
Total 3667 761 20.75 386 48 12.44 230 40 17.39 4283 849 19.82 χ2 = 16.11,
(19.45, 22.06) (9.16, 15.71) (12.52, 22.26) (18.63, 21.01) P < 0.001
All Guangdong 20349 3491 17.16 5647 906 16.04 2483 289 11.64 28479 4686 16.45 χ2 = 49.85,
(16.64, 17.67) (15.09, 17.00) (10.38, 12.89) (16.03, 16.88) P < 0.001
  1. Note: CI is Confidence Interval.