Table 2.
Evaluation of the OLIN reference values on the northern Sweden reference sample
| Observed values | Predicted values | Predicted LLN | % of predicted | Z-score | Percentile point | |||||||||
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| Age group | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | P | |
| Among women | ||||||||||||||
| 22–39 years n=106 | FEV1 | 3.318 | 0.411 | 3.316 | 0.209 | 2,763 | 0.205 | 100.0 | 10.4 | 0.006 | 1.018 | 0.4919 | 0.280 | 0.773 |
| FVC | 4.141 | 0.539 | 4.122 | 0.280 | 3.378 | 0.278 | 100.4 | 10.9 | 0.043 | 1.003 | 0.5060 | 0.262 | 0.831 | |
| SVC | 4.157 | 0.554 | 4.146 | 0.280 | 3.365 | 0.279 | 100.2 | 11.1 | 0.024 | 0.983 | 0.5047 | 0.264 | 0.867 | |
| VC | 4.195 | 0.545 | 4.181 | 0.284 | 3.428 | 0.283 | 100.3 | 10.9 | 0.032 | 1.001 | 0.5053 | 0.266 | 0.850 | |
| FEV1/FVC | 0.804 | 0.054 | 0.809 | 0.006 | 0.720 | 0.008 | 99.5 | 6.6 | −0.069 | 1.003 | 0.4809 | 0.283 | 0.496 | |
| FEV1/VC | 0.793 | 0.055 | 0.796 | 0.006 | 0.708 | 0.008 | 99.6 | 6.8 | −0.051 | 1.008 | 0.4891 | 0.280 | 0.698 | |
| 40–59 years n=74 | FEV1 | 2.973 | 0.401 | 2.975 | 0.282 | 2.456 | 0.271 | 100.0 | 10.6 | −0.008 | 0.990 | 0.5041 | 0.297 | 0.903 |
| FVC | 3.781 | 0.529 | 3.808 | 0.338 | 3.086 | 0.332 | 99.5 | 11.9 | −0.062 | 1.033 | 0.4776 | 0.291 | 0.504 | |
| SVC | 3.815 | 0.576 | 3.834 | 0.334 | 3.064 | 0.331 | 99.7 | 13.2 | −0.041 | 1.084 | 0.4929 | 0.289 | 0.832 | |
| VC | 3.852 | 0.540 | 3.874 | 0.338 | 3.133 | 0.335 | 99.6 | 12.0 | −0.048 | 1.032 | 0.4829 | 0.287 | 0.610 | |
| FEV1/FVC | 0.789 | 0.062 | 0.782 | 0.015 | 0.686 | 0.018 | 100.9 | 7.5 | 0.119 | 1.006 | 0.5422 | 0.290 | 0.209 | |
| FEV1/VC | 0.774 | 0.061 | 0.769 | 0.017 | 0.670 | 0.021 | 100.7 | 7.7 | 0.095 | 0.987 | 0.5320 | 0.292 | 0.340 | |
| 60–91 years n=64 | FEV1 | 2.036 | 0.471 | 2.034 | 0.366 | 1.574 | 0.348 | 100.0 | 14.2 | 0.006 | 1.006 | 0.4982 | 0.294 | 0.960 |
| FVC | 2.734 | 0.667 | 2.737 | 0.519 | 2.054 | 0.507 | 99.9 | 15.0 | −0.007 | 0.978 | 0.4832 | 0.289 | 0.642 | |
| SVC | 2.817 | 0.699 | 2.814 | 0.528 | 2.061 | 0.522 | 100.0 | 15.2 | 0.007 | 0.947 | 0.4881 | 0.281 | 0.744 | |
| VC | 2.830 | 0.701 | 2.831 | 0.538 | 2.110 | 0.532 | 99.9 | 15.0 | −0.003 | 0.983 | 0.4828 | 0.288 | 0.636 | |
| FEV1/FVC | 0.750 | 0.069 | 0.749 | 0.009 | 0.638 | 0.008 | 100.0 | 9.1 | 0.004 | 1.002 | 0.5078 | 0.285 | 0.829 | |
| FEV1/VC | 0.726 | 0.072 | 0.726 | 0.009 | 0.611 | 0.009 | 99.9 | 9.9 | −0.007 | 1.019 | 0.5030 | 0.295 | 0.934 | |
| All ages n=244 | FEV1 | 2.877 | 0.673 | 2.877 | 0.593 | 2.358 | 0.555 | 100.0 | 11.5 | 0.002 | 1.002 | 0.4972 | 0.287 | 0.880 |
| FVC | 3.663 | 0.810 | 3.663 | 0.680 | 2.942 | 0.656 | 100.0 | 12.3 | −0.002 | 1.003 | 0.4914 | 0.277 | 0.642 | |
| SVC | 3.706 | 0.811 | 3.706 | 0.660 | 2.935 | 0.649 | 100.0 | 12.9 | 0.000 | 1.002 | 0.4968 | 0.275 | 0.863 | |
| VC | 3.737 | 0.808 | 3.737 | 0.670 | 2.996 | 0.658 | 100.0 | 12.3 | −0.001 | 1.002 | 0.4927 | 0.277 | 0.693 | |
| FEV1/FVC | 0.785 | 0.064 | 0.785 | 0.026 | 0.688 | 0.035 | 100.1 | 7.6 | 0.007 | 1.003 | 0.5065 | 0.286 | 0.725 | |
| FEV1/VC | 0.770 | 0.067 | 0.770 | 0.030 | 0.671 | 0.042 | 100.0 | 7.9 | 0.005 | 1.002 | 0.5058 | 0.287 | 0.754 | |
| Among men | ||||||||||||||
| 22–39 years n=118 | FEV1 | 4.596 | 0.580 | 4.579 | 0.316 | 3.775 | 0.313 | 100.4 | 10.3 | 0.036 | 1.056 | 0.5065 | 0.280 | 0.807 |
| FVC | 5.760 | 0.760 | 5.740 | 0.432 | 4.719 | 0.430 | 100.3 | 10.6 | 0.032 | 0.985 | 0.5014 | 0.277 | 0.958 | |
| SVC | 5.876 | 0.554 | 5.856 | 0.461 | 4.807 | 0.459 | 100.3 | 10.9 | 0.032 | 1.004 | 0.5038 | 0.280 | 0.886 | |
| VC | 5.896 | 0.790 | 5.875 | 0.455 | 4.831 | 0.453 | 100.4 | 10.7 | 0.034 | 1.000 | 0.4967 | 0.280 | 0.901 | |
| FEV1/FVC | 0.800 | 0.052 | 0.800 | 0.006 | 0.717 | 0.007 | 100.1 | 6.5 | 0.011 | 1.027 | 0.5043 | 0.288 | 0.872 | |
| FEV1/VC | 0.782 | 0.056 | 0.783 | 0.008 | 0.695 | 0.008 | 100.0 | 7.2 | −0.007 | 1.056 | 0.5001 | 0.290 | 0.997 | |
| 40–59 years n=84 | FEV1 | 4.177 | 0.580 | 4.193 | 0.346 | 3.419 | 0.338 | 99.7 | 11.8 | −0.033 | 1.044 | 0.4931 | 0.302 | 0.827 |
| FVC | 5.283 | 0.741 | 5.301 | 0.448 | 4.301 | 0.443 | 99.8 | 12.2 | −0.028 | 1.042 | 0.4972 | 0.304 | 0.929 | |
| SVC | 5.413 | 0.744 | 5.429 | 0.471 | 4.412 | 0.464 | 99.8 | 11.7 | −0.025 | 1.013 | 0.4974 | 0.301 | 0.934 | |
| VC | 5.428 | 0.739 | 5.448 | 0.464 | 4.438 | 0.457 | 99.7 | 11.7 | −0.031 | 1.022 | 0.4967 | 0.303 | 0.917 | |
| FEV1/FVC | 0.793 | 0.050 | 0.792 | 0.006 | 0.707 | 0.009 | 100.0 | 6.1 | 0.009 | 0.937 | 0.5075 | 0.280 | 0.812 | |
| FEV1/VC | 0.771 | 0.050 | 0.771 | 0.010 | 0.682 | 0.010 | 100.0 | 6.1 | 0.002 | 1.086 | 0.5056 | 0.276 | 0.859 | |
| 60–86 years n=55 | FEV1 | 3.285 | 0.657 | 3.297 | 0.503 | 2.576 | 0.488 | 99.7 | 13.4 | −0.025 | 1.020 | 0.4899 | 0.293 | 0.795 |
| FVC | 4.362 | 0.838 | 4.382 | 0.625 | 3.419 | 0.615 | 99.6 | 13.6 | −0.034 | 0.991 | 0.4839 | 0.285 | 0.679 | |
| SVC | 4.517 | 0.844 | 4.535 | 0.605 | 3.573 | 0.590 | 99.6 | 13.3 | −0.031 | 0.997 | 0.4836 | 0.282 | 0.674 | |
| VC | 4.536 | 0.837 | 4.553 | 0.605 | 3.603 | 0.589 | 99.6 | 13.0 | −0.030 | 0.992 | 0.4832 | 0.280 | 0.666 | |
| FEV1/FVC | 0.754 | 0.058 | 0.753 | 0.014 | 0.665 | 0.015 | 100.2 | 7.6 | 0.022 | 1.065 | 0.5167 | 0.284 | 0.668 | |
| FEV1/VC | 0.725 | 0.064 | 0.725 | 0.021 | 0.633 | 0.022 | 100.0 | 8.5 | 0.002 | 1.086 | 0.5126 | 0.297 | 0.746 | |
| All ages n=257 | FEV1 | 4.179 | 0.777 | 4.179 | 0.616 | 3.402 | 0.586 | 100.0 | 11.5 | 0.000 | 1.002 | 0.4986 | 0.289 | 0.938 |
| FVC | 5.305 | 0.936 | 5.306 | 0.709 | 4.304 | 0.690 | 100.0 | 11.8 | −0.001 | 1.002 | 0.4963 | 0.287 | 0.837 | |
| SVC | 5.434 | 0.943 | 5.434 | 0.708 | 4.414 | 0.680 | 100.0 | 11.7 | 0.000 | 1.002 | 0.4974 | 0.286 | 0.885 | |
| VC | 5.452 | 0.939 | 5.453 | 0.705 | 4.439 | 0.675 | 100.0 | 11.6 | −0.001 | 1.002 | 0.4970 | 0.286 | 0.868 | |
| FEV1/FVC | 0.788 | 0.056 | 0.787 | 0.020 | 0.702 | 0.022 | 100.1 | 6.6 | 0.013 | 1.003 | 0.5080 | 0.284 | 0.657 | |
| FEV1/VC | 0.766 | 0.060 | 0.766 | 0.025 | 0.677 | 0.027 | 100.0 | 7.2 | −0.002 | 1.002 | 0.5046 | 0.286 | 0.798 | |
A P<0.05 indicates a non-perfect model fit.