|  | Current Doctor-Diagnosed Asthma |  | Asthma x spirometry quality | |||
---|---|---|---|---|---|---|---|
 |  | No (n = 575) | Yes (n = 151) | F(df) or Chi2(df) | P | F(df) or Chi2(df) | P |
Completion/ | No test | 77 | 21 | Â | Â | Â | Â |
acceptability of spirometry | Unacceptable | 51 | 15 | Â | Â | Â | Â |
 | Acceptable | 447 | 115 |  |  |  |  |
Outcomes, asthma symptoms | Â | Â | Â | Â | Â | Â | Â |
CASS, range 0-8 | No test | 3.62 (3.26, 3.99) | 5.33 (4.64, 6.27) | F(5,711) = 19.26 | <0.001 | F(2,711) = 1.16 | 0.32 |
 | Unacceptable | 3.28 (2.83, 3.72) | 5.23 (4.35, 6.11) |  |  |  |  |
 | Acceptable | 3.28 (3.13, 3.43) | 4.56 (4.26, 4.86) |  |  |  |  |
log CASS | No test | 1.16 (1.05, 1.27) | 1.63 (1.41, 1.84) | F(5,711) = 14.33 | <0.001 | F(2,711) = 0.55 | 0.58 |
 | Unacceptable | 1.09 (0.95, 1.22) | 1.54 (1.27, 1.82) |  |  |  |  |
 | Acceptable | 1.07 (1.03, 1.12) | 1.42 (1.33, 1.51) |  |  |  |  |
Outcomes, spirometry | Â | Â | Â | Â | Â | Â | Â |
(acceptable tests only) | Â | Â | Â | Â | Â | Â | Â |
FEV1 reversibility, L |  | 0.11 (0.09, 0.12) | 0.12 (0.09, 0.14) | F(1, 538) = 0.22 | 0.64 |  |  |
FEV1 reversibility,% |  | 3.88 (3.27, 4.49) | 5.03 (3.83, 6.24) | F(1, 538) = 2.80 | 0.10 |  |  |
post FEV1, L |  | 3.01 (2.93, 3.10) | 2.76 (2.60, 2.92) | F(1, 538) = 7.62 | <0.01 |  |  |
post FVC, L |  | 3.80 (3.70, 3.90) | 3.64 (3.44, 3.83) | F(1, 523) = 2.02 | 0.16 |  |  |
post FEV1/FVC,% |  | 79.46 (78.73, 80.19) | 76.14 (74.70, 77.57) | F(1, 523) = 16.34 | <0.001 |  |  |
post PEF, L/s |  | 7.83 (7.62, 8.03) | 7.23 (6.83, 7.63) | F(1, 538) = 6.80 | <0.01 |  |  |
post FEF25%-75%, L/s |  | 3.06 (2.94, 3.17) | 2.55 (2.32, 2.78) | F(1, 538) = 15.16 | <0.001 |  |  |
FEV1, ppv†|  | 90.34 (88.79, 91.88) | 84.20 (81.16, 87.24) | F(1, 538) = 12.46 | <0.001 |  |  |
FVC, ppv†|  | 93.90 (92.44, 95.35) | 91.70 (88.81, 94.60) | F(1, 523) = 1.76 | 0.19 |  |  |
FEV1/FVC, ppv†|  | 96.66 (95.81, 97.50) | 91.03 (89.35, 92.70) | F(1, 523) = 34.55 | <0.001 |  |  |
PEF, ppv†|  | 97.24 (95.50, 98.98) | 92.44 (89.02, 95.85) | F(1, 538) = 6.03 | 0.02 |  |  |
FEF25%-75%, ppv†|  | 84.55 (81.90, 87.20) | 71.28 (66.07, 76.49) | F(1, 538) = 19.79 | <0.001 |  |  |
Independent variables | Â | Â | Â | Â | Â | Â | Â |
Intra-abdominal fat,% | No test | 39.58 (37.26, 41.90) | 39.44 (34.92, 43.96) | F(5,692) = 1.16 | 0.33 | F(2,692) = 1.71 | 0.18 |
 | Unacceptable | 38.81 (35.92, 41.70) | 33.06 (27.66, 38.47) |  |  |  |  |
 | Acceptable | 39.55 (38.57, 40.52) | 39.91 (37.99, 41.83) |  |  |  |  |
Mediator variables | Â | Â | Â | Â | Â | Â | Â |
HOMA2-IR | No test | 1.35 (1.09, 1.66) | 2.01 (1.52, 2.52) | F(5,703) = 1.51 | 0.19 | F(2,703) = 3.18 | 0.04 |
 | Unacceptable | 1.39 (1.06, 1.71) | 1.71 (1.09, 2.34) |  |  |  |  |
 | Acceptable | 1.40 (1.30, 1.59) | 1.32 (1.11, 1.54) |  |  |  |  |
SDB symptom score, range 0-12 | No test | 1.18 (0.63, 1.73) | 1.87 (0.75, 2.98) | F(5,594) = 1.74 | 0.12 | F(2,594) = 0.07 | 0.93 |
 | Unacceptable | 1.54 (0.83, 2.25) | 2.09 (0.79, 3.40) |  |  |  |  |
 | Acceptable | 0.96 (0.74, 1.18) | 1.39 (0.93, 1.85) |  |  |  |  |