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. 2016 Jun 30;11(6):e0157932. doi: 10.1371/journal.pone.0157932

Table 2. Results of the ambulatory blood pressure monitoring.

Variable Cases (n = 67) COPD Controls (n = 67) Smokers, non-COPD Difference (95% CI) P
24 h mean SBP, mmHg 124·8 ± 12·6 124·7 ± 12·6 ‒ 0·13 (‒ 4·48 to 4·20) 0·94
24 h maximal SBP, mmHg 155·3 ± 17·2 154·8 ± 18·3 ‒ 0·45 (‒ 6·55 to 5·65) 0·88
24 h mean DBP, mmHg 76·1 ± 8·0 76·3 ± 6·6 0·19 (‒ 2·33 to 2·73) 0·87
24 h maximal DBP, mmHg 99·5 ± 10·4 99·2 ± 9·9 ‒ 0·23 (‒ 3·73 to 3·26) 0·89
Daytime mean SBP, mmHg 127·8 ±12·6 128·9 ± 13·0 1·04 (‒ 3·34 to 5·43) 0·64
Daytime maximal SBP, mmHg 154·4 ± 16·0 154·3 ± 18·4 ‒ 0·34 (‒ 5·96 to 5·88) 0·99
Daytime mean DBP, mmHg 79·3 ± 8·2 80·1 ± 7·1 0·71 (‒ 1·92 to 3·36) 0·59
Daytime maximal DBP, mmHg 99·0 ± 10·3 98·9 ± 10·1 ‒ 0·07 (‒ 3·58 to 3·44) 0·96
Nighttime mean SBP, mmHg 119·7 ± 15·2 117·9 ± 13·4 ‒ 1·79 (‒ 6·72 to 3·14) 0·47
Nighttime maximal SBP, mmHg 141·4 ± 18·2 138·4 ± 17·4 ‒ 3·02 (‒ 9·14 to 3·10) 0·33
Nighttime mean DBP, mmHg 70·9 ± 9·2 70·2 ± 7·1 ‒ 0·63 (‒ 3·46 to 2·18) 0·65
Nighttime maximal DBP, mmHg 87·6 ± 11·0 86·6 ± 10·4 ‒ 1·05 (‒ 4·73 to 2·63) 0·57
Non dipper, n, % 32 (47·7%) 38 (56·7%) 0·15
Dipper, n, % 23 (34·3%) 22(32·8%)
Extreme dipper, n,% 0 2 (2·9%)
Riser, n,% 12 (17·9%) 5 (7·4%)

CI: confidence interval; SBP: systolic blood pressure; DBP: diastolic blood pressure.