二氧化氮短期暴露对上海市老年人血管内皮功能的影响
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钟林杉, 丁琳, 姜绮霞
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Impact of short-term exposure to nitrogen dioxide on vascular endothelial function in elderly residents of Shanghai
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ZHONG Linshan, DING Lin, JIANG Qixia
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表1 受试者基线特征
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Tab 1 Baseline characteristics of the study participants
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| Population characteristic | Overall (n=812) | Non-VED (n=178) | VED (n=634) | P value |
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| FMD/% | 4.20 (2.80, 5.62) | 7.30 (6.53, 8.47) | 3.60 (2.40, 4.60) | <0.001 | | Age/year | 70.61±5.43 | 71.08±5.68 | 68.94±4.03 | <0.001 | | Gender/n(%) | | | | <0.001 | | Female | 495 (61.0) | 131 (73.6) | 364 (57.4) | | | Male | 317 (39.0) | 47 (26.4) | 270 (42.6) | | | Smoking/n(%) | | | | 0.041 | | No | 704 (86.7) | 163 (91.6) | 541 (85.3) | | | Yes | 108 (13.3) | 15 ( 8.4) | 93 (14.7) | | | Drinking/n(%) | | | | 0.119 | | No | 714 (87.9) | 163 (91.6) | 551 (86.9) | | | Yes | 98 (12.1) | 15 ( 8.4) | 83 (13.1) | | | Hypertension/n(%) | | | | 0.157 | | No | 117 (14.4) | 32 (18.0) | 85 (13.4) | | | Yes | 695 (85.6) | 146 (82.0) | 549 (86.6) | | | Diabetes/n(%) | | | | 0.481 | | No | 658 (81.0) | 148 (83.1) | 510 (80.4) | | | Yes | 154 (19.0) | 30 (16.9) | 124 (19.6) | | | Dyslipidemia/n(%) | | | | 0.189 | | No | 448 (55.2) | 90 (50.6) | 358 (56.5) | | | Yes | 364 (44.8) | 88 (49.4) | 276 (43.5) | | | CAD/n(%) | | | | 0.357 | | No | 736 (90.6) | 165 (92.7) | 571 (90.1) | | | Yes | 76 ( 9.4) | 13 ( 7.3) | 63 ( 9.9) | | | CVD/n(%) | | | | 0.490 | | No | 790 (97.3) | 175 (98.3) | 615 (97.0) | | | Yes | 22 ( 2.7) | 3 (1.7) | 19 ( 3.0) | | | CVD family history/n(%) | | | | 1.000 | | No | 652 (80.3) | 143 (80.3) | 509 (80.3) | | | Yes | 160 (19.7) | 35 (19.7) | 125 (19.7) | | | Season/n(%) | | | | 0.178 | | Spring | 190 (23.4) | 41 (23.0) | 149 (23.5) | | | Summer | 229 (28.2) | 59 (33.1) | 170 (26.8) | | | Autumn | 133 (16.4) | 21 (11.8) | 112 (17.7) | | | Winter | 260 (32.0) | 57 (32.0) | 203 (32.0) | |
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