Table 4 Differences in blood pressure for measures of blood pressure variability across quartiles of forced-expiratory-volume-in-1-second-to-forced-vital-capacity ratio
Forced expiratory volume in 1 s to forced vital capacity ratio | |||||
|---|---|---|---|---|---|
Quartile 1 (lowest) | Quartile 2 | Quartile 3 | Quartile 4 (highest) | p-trend | |
Day-night standard deviation | |||||
Systolic blood pressure | (n = 251) | (n = 253) | (n = 253) | (n = 251) | |
Mean ± standard deviation | 9.3 ± 2.6 | 9.2 ± 2.2 | 9.4 ± 2.5 | 9.3 ± 2.5 | 0.680 |
Model 1, β (95 % CI) | 0 (ref) | −0.1 (−0.5 to 0.3) | 0.2 (−0.2 to 0.6) | −0.1 (−0.5 to 0.4) | 0.890 |
Model 2, β (95 % CI) | 0 (ref) | −0.0 (−0.5 to 0.4) | 0.1 (−0.4 to 0.5) | −0.1 (−0.5 to 0.4) | 0.314 |
Diastolic blood pressure | |||||
Mean ± standard deviation | 8.1 ± 2.2 | 8.1 ± 2.0 | 8.2 ± 2.3 | 8.0 ± 2.1 | 0.685 |
Model 1, β (95 % CI) | 0 (ref) | 0.0 (−0.4 to 0.4) | 0.1 (−0.3 to 0.4) | −0.1 (−0.5 to 0.3) | 0.688 |
Model 2, β (95 % CI) | 0 (ref) | −0.0 (−0.4 to 0.3) | −0.2 (−0.6 to 0.2) | −0.2 (−0.6 to 0.2) | 0.180 |
Average real variability | |||||
Systolic blood pressure | |||||
Mean ± standard deviation | 8.7 ± 2.2 | 8.6 ± 2.0 | 8.8 ± 2.0 | 8.8 ± 2.1 | 0.570 |
Model 1, β (95 % CI) | 0 (ref) | −0.1 (−0.5 to 0.2) | 0.1 (−0.2 to 0.5) | −0.0 (−0.4 to 0.3) | 0.765 |
Model 2, β (95 % CI) | 0 (ref) | −0.1 (−0.5 to 0.2) | 0.1 (−0.3 to 0.4) | 0.0 (−0.3 to 0.4) | 0.702 |
Diastolic blood pressure | |||||
Mean ± standard deviation | 7.6 ± 2.1 | 7.7 ± 2.0 | 7.7 ± 2.2 | 7.6 ± 2.1 | 0.888 |
Model 1, β (95 % CI) | 0 (ref) | 0.0 (−0.3 to 0.4) | 0.1 (−0.2 to 0.5) | 0.0 (−0.4 to 0.4) | 0.878 |
Model 2, β (95 % CI) | 0 (ref) | −0.1 (−0.4 to 0.3) | −0.1 (−0.5 to 0.3) | −0.2 (−0.6 to 0.2) | 0.297 |