Table 1 Single factor analysis of SAD
From: Analysis of influencing factors and a predictive model of small airway dysfunction in adults
|  | total(n = 1233) | Non-SAD | SAD | p Value |
|---|---|---|---|---|
n = 553 | n = 680 | |||
age(years) | 52.97 ± 14.1 | 50 ± 13.9 | 55.21 ± 13.8 |  < 0.001*** |
Age group (years) |  < 0.001*** | |||
18–29 | 78(6.3%) | 48(8.7%) | 30(4.4%) | |
30–39 | 164(13.3%) | 90(16.3%) | 74(10.9%) | |
40–49 | 230(18.7%) | 113(20.4%) | 117(17.2%) | |
50–59 | 328(26.6%) | 152(27.5%) | 176(25.9%) | |
60–69 | 289(23.4%) | 106(19.2%) | 183(26.9%) | |
70–79 | 122(9.9%) | 40(7.2%) | 82(12.1%) | |
80 +  | 22(1.8%) | 4(0.7%) | 18(2.6%) | |
Gender | 0.275 | |||
male | 650(52.7%) | 282(51.0%) | 368(54.1%) | |
female | 583(47.3%) | 271(49.0%) | 312(45.9%) | |
BMI | 0.695 | |||
 < 18.5 | 44(3.6%) | 17(3.1%) | 27(4.0%) | |
18.5–24.9 | 550(44.6%) | 249(45.0%) | 301(44.3%) | |
 > 25 | 639(51.8%) | 287(51.9%) | 352(51.8%) | |
Educational Status |  < 0.001*** | |||
Primary school or less | 669(54.3%) | 278(50.3%) | 391(57.5%) | |
Middle and high school | 228(18.5%) | 91(16.5%) | 137(20.1%) | |
College and higher | 336(27.3%) | 184(33.3%) | 152(22.4%) | |
History of dust exposure | 0.004** | |||
No | 1073(87.0%) | 498(90.1%) | 575(84.6%) | |
Yes | 160(13.0%) | 55(9.9%) | 105(15.4%) | |
Family history |  < 0.001*** | |||
No | 1030(83.5%) | 486(87.9%) | 544(80.0%) | |
Yes | 203(16.5%) | 67(12.1%) | 136(20.0%) | |
Currently smoking | 0.001** | |||
No | 742(60.2%) | 362(65.5%) | 380(55.9%) | |
Yes | 491(39.8%) | 191(34.5%) | 300(44.1%) | |
Passive smoking | 0.114 | |||
No | 748(60.7%) | 322(58.2%) | 422(62.6%) | |
Yes | 485(39.3%) | 231(41.8%) | 254(37.4%) | |
Biomass fuel | 0.084 | |||
No | 1025(83.1%) | 471(85.2%) | 554(81.5%) | |
Yes | 208(16.9%) | 82(14.8%) | 126(18.5%) | |
Green tea | 0.081 | |||
Never | 914(74.1%) | 400(72.3%) | 514(75.6%) | |
Occasionally | 103(8.4%) | 57(10.3%) | 46(6.8%) | |
Always | 216(17.5%) | 96(17.4%) | 120(17.6%) | |
Drinking | 0.946 | |||
Never | 1041(84.4%) | 469(84.8%) | 572(84.1%) | |
Occasionally | 71(5.8%) | 31(5.6%) | 40(5.9%) | |
Always | 121(9.8%) | 53(9.6%) | 68(10.0%) | |
Sporting | 0.907 | |||
No | 709(57.5%) | 319(57.7%) | 390(57.4%) | |
Yes | 524(42.5%) | 234(42.3%) | 290(42.6%) | |
Pet Keeping | 0.012* | |||
No | 1021(82.8%) | 473(85.5%) | 548(80.6%) | |
 < 1 Year | 23(1.9%) | 13(2.4%) | 10(1.5%) | |
 > 1Year | 189(15.3%) | 67(12.1%) | 122(17.9%) | |
History of chronic bronchitis |  < 0.001*** | |||
No | 1009(81.8%) | 494(89.3%) | 515(75.7%) | |
Yes | 224(18.2%) | 59(10.7%) | 165(24.3%) | |
History of emphysema |  < 0.001*** | |||
No | 1104(89.5%) | 526(95.1%) | 578(85.0%) | |
Yes | 129(10.5%) | 27(4.9%) | 102(15.0%) | |
History of asthma |  < 0.001*** | |||
No | 1159(94.0%) | 543(98.2%) | 616(90.6%) | |
Yes | 74(6.0%) | 10(1.8%) | 64(9.4%) | |
Hypertension | 0.099 | |||
No | 975(79.1%) | 449(81.2%) | 526(77.4%) | |
Yes | 258(20.9%) | 104(18.8%) | 154(22.6%) | |
Diabetes | 0.192 | |||
No | 1125(91.2%) | 511(92.4%) | 614(90.3%) | |
Yes | 108(8.8%) | 42(7.6%) | 66(9.7%) | |