Table 1 Baseline characteristics of the Rafsanjan cohort participants according to CRD
Characteristics | Total (n=9934) | Chronic respiratory disease (n= 259) | No chronic respiratory disease (n=9675) | P Value |
|---|---|---|---|---|
Job class 1.no. (%) | ||||
 Employment | 1294(13.03) | 25(9.65) | 1269(13.12) | 0.013 |
 Homemaker and Unemployment | 4145(41.73) | 127(49.03) | 4018(41.54) | |
 Retired | 1077(10.84) | 35(13.51) | 1042(10.77) | |
 Self-employment | 3416(34.39) | 72(27.80) | 3344(34.57) | |
Job class 2.no. (%) | ||||
 Copper miner | 361(3.63) | 11(4.25) | 350(3.62) | 0.119 |
 Pistachio farmer | 1254(12.63) | 22(8.49) | 1232(12.74) | |
 Other | 8317(83.74) | 226(87.26) | 8091(83.65) | |
Age-year.no. (%) | ||||
 35-44 | 3697 (37.22) | 72(27.80) | 3625 (37.47) | 0.002 |
 45-54 | 3060 (30.81) | 83(32.05) | 2977(30.77) | |
 55-64 | 3176(31.97) | 104(40.15) | 3072(31.76) | |
 (Mean± SD) | 49.94±9.56 | 51.76±9.56 | 49.89±9.56 | 0.002 |
Gender- no. (%) | ||||
 Male | 4624 (46.55) | 104(40.15) | 4520 (46.72) | 0.037 |
 Female | 5310 (53.45) | 155(59.85) | 51.55(53.28) | |
Education-no. (%) | ||||
 <=5 years | 3484 (35.09) | 109(42.08) | 3375 (34.90) | 0.057 |
 6/12 years | 4820 (48.54) | 112 (43.24) | 4708 (48.69 | |
 >=13 years | 1625 (16.37) | 38 (14.67) | 1587 (16.41) | |
 (Mean± SD) | 8.52±5.05 | 7.84±5.29 | 8.54±5.04 | 0.03 |
BMI- no. (%) | ||||
 <25 | 2868 (28.89) | 60 (23.17) | 2808 (29.04) | 0.001 |
 25-29.9 | 4070 (41.00) | 95 (36.68) | 3975 (41.11) | |
 ≥30 | 2990 (30.12) | 104 (40.15) | 2886 (29.85) | |
 (Mean± SD) | 27.82±4.92 | 28.58±5.22 | 27.80±4.91 | 0.01 |
Physical activity | ||||
 (Mean± SD) | 38.79±6.32 | 38.12±6.60 | 38.81±6.31 | 0.082 |
WSI | ||||
 (Mean± SD) | -0.02±1 | -0.047±1.13 | -0.001±1 | 0.464 |
Use opium- no. (%) | ||||
 yes | 2345 (23.65) | 62 (24.03) | 2283 (23.64) | 0.885 |
 no | 7569 (76.35) | 196 (75.97) | 7373 (76.36) |  |
Alcohol consumption- no. (%) | ||||
 yes | 993 (10.02) | 19 (7.36) | 974 (10.09) | 0.151 |
 no | 8921 (89.98) | 239 (92.64) | 8682 (89.91) | |
Cigarette smoking-no. (%) | ||||
 current | 1679 (16.94) | 24 (9.30) | 1655 (17.14) | <0.001 |
 never | 7371 (74.35) | 200 (77.52) | 7171 (74.26) | |
 Former | 864 (8.71) | 34 (13.18) | 830 (8.60) | |
Hypertension- no. (%) | ||||
 yes | 2235 (22.50) | 68 (26.25) | 2167 (22.40) | 0.142 |
 No | 7699 (77.50) | 191 (73.75) | 7508 (77.60) | |
CVD - no. (%) | ||||
 yes | 1031(10.38) | 45(17.37) | 986(10.19) | <0.001 |
 No | 8903(89.62) | 214(82.63) | 8689(89.81) |  |
Diabetes mellitus- no. (%) | ||||
 yes | 1933 (19.46) | 58 (22.39) | 1875 (19.38) | 0.227 |
 No | 8001 (80.54) | 201 (77.61) | 7800 (80.62) |  |
Animal Contact no. (%) | ||||
 yes | 8727 (87.96) | 228 (88.03) | 8499 (87.96) | 0.974 |
 No | 1194 (12.04) | 31 (11.97) | 1163 (12.04) |  |