Table 3:
Mean and mean differences in left ventricular mass index comparing participants with neither masked hypertension (MHT) on ambulatory blood pressure monitoring (ABPM) nor home blood pressure monitoring (HBPM) versus participants with MHT only on ABPM, MHT only on HBPM, and MHT on both ABPM and HBPM.
| Measure | Categories Defined by Any MHT Status and Home MHT Status | ||||
|---|---|---|---|---|---|
| Neither Any MHT nor Home MHT (N = 238) | Any MHT without Home MHT (N = 58) | Home MHT without Any MHT (N = 9) | Both Any MHT and Home MHT (N = 28) | p-value | |
| LVMI* | 76.0 (15.1) | 82.1 (14.4) | 77.1 (9.2) | 92.6 (18.0) | - |
| Unadjusted difference† | 0 (ref) | 6.1 (2.2) | 1.1 (5.1) | 16.6 (3.0) | P1=0.006 P2=0.837 P3<0.001 |
| Adjusted difference† | 0 (ref) | 4.9 (2.1) | −1.9 (4.8) | 12.7 (2.9) | P1=0.022 P2=0.693 P3<0.001 |
| Categories Defined by Daytime MHT Status and Home MHT Status | |||||
| Neither Daytime MHT nor Home MHT (N = 262) | Daytime MHT without Home MHT (N = 34) | Home MHT without Daytime MHT (N = 13) | Both Daytime MHT and Home MHT (N = 24) | p-value | |
| LVMI* | 76.5 (15.1) | 82.6 (14.4) | 84.0 (17.8) | 91.5 (17.2) | - |
| Unadjusted difference† | 0 (ref) | 6.2 (2.8) | 7.5 (4.4) | 15.0 (3.3) | P1=0.028 P2=0.085 P3<0.001 |
| Adjusted difference† | 0 (ref) | 4.0 (2.6) | 3.7 (4.1) | 11.0 (3.1) | P1=0.126 P2=0.367 P3<0.001 |
| Categories Defined by 24-hour MHT Status and Home MHT Status | |||||
| Neither 24-hour MHT nor Home MHT (N = 260) | 24-hour MHT without Home MHT (N = 36) | Home MHT without 24-hour MHT (N = 14) | Both 24-hour MHT and Home MHT (N = 23) | p-value | |
| LVMI* | 76.4 (15.1) | 82.7 (14.6) | 81.5 (13.4) | 93.3 (18.5) | - |
| Unadjusted difference† | 0 (ref) | 6.3 (2.7) | 5.1 (4.2) | 16.9 (3.3) | P1=0.021 P2=0.223 P3<0.001 |
| Adjusted difference† | 0 (ref) | 4.3 (2.6) | 1.1 (3.9) | 13.2 (3.2) | P1=0.093 P2=0.788 P3<0.001 |
| Categories Defined by Nighttime MHT Status and Home MHT Status | |||||
| Neither Nighttime MHT nor Home MHT (N = 251) | Nighttime MHT without Home MHT (N = 45) | Home MHT without Nighttime MHT (N = 17) | Both Nighttime MHT and Home MHT (N = 20) | p-value | |
| LVMI* | 76.0 (15.1) | 84.1 (13.9) | 84.1 (13.2) | 92.9 (20.0) | - |
| Unadjusted difference† | 0 (ref) | 8.1 (2.5) | 8.1 (3.8) | 16.9 (3.5) | P1=0.001 P2=0.033 P3<0.001 |
| Adjusted difference† | 0 (ref) | 7.5 (2.3) | 3.4 (3.6) | 14.7 (3.3) | P1=0.001 P2=0.343 P3<0.001 |
Adjusted model adjusts for age, sex, race, ethnicity, and current smoking
P1= comparison of Neither MHT on ABPM nor HBPM with MHT on ABPM without MHT on HBPM
P2= comparison of Neither MHT on ABPM nor HBPM with MHT on HBPM without MHT on ABPM
P3= comparison of Neither MHT on ABPM nor HBPM with Both MHT on ABPM and HBPM
Left ventricular mass index (LVMI) defined as left ventricular mass indexed to body surface area in g/m2
Any MHT was defined as having daytime MHT, 24-hour MHT, and/or nighttime MHT on ABPM
Daytime MHT was defined as mean SBP ≥ 135 mmHg and/or mean DBP ≥ 85 mmHg using BP readings during the daytime period on ABPM
24-hour MHT was defined as mean SBP ≥ 130 mmHg and/or DBP ≥ 80 mmHg using all available readings on ABPM
Nighttime MHT was defined as SBP ≥ 120 mmHg and/or DBP ≥ 70 mmHg during the nighttime period on ABPM
Home MHT was defined as home SBP ≥ 135 mmHg and/or DBP ≥ 85 mmHg on HBPM
Mean (standard deviation)
Mean difference (standard error)
ABPM: Ambulatory blood pressure monitoring
DBP: Diastolic blood pressure
HBPM: Home blood pressure monitoring
MHT: Masked hypertension
SBP: Systolic blood pressure