Table 1.
Comparison of Demographic Data and BP Readings in 2010 Between the Baseline Cohort Not Seen in 2013 and Patients Seen in 2013
| Baseline Cohort Not Followed‐Up (n=2144) | Baseline Cohort Followed‐Up in 2013 (n=79) | Significance of Difference | |
|---|---|---|---|
| Age in 2010, y | Median: 76 (IQR 72–81) | Median: 76 (IQR 72–80) | U=80390.5, z=−0.769, P=.442 |
| 70–74 | 838 (39.1%) | 36 (45.6%) | |
| 75–79 | 602 (28.1%) | 20 (25.3%) | |
| 80–84 | 328 (15.3%) | 14 (17.7%) | |
| 85 and older | 376 (17.5%) | 9 (11.4%) | |
| Male | 930 (43.3%) | 42 (53.2%) | χ2 (1)=2.966, P=.085 |
| Female | 1214 (56.6%) | 37 (46.8%) | |
| Mean systolic BP 2010 (standard deviation) | 160.8 (33.95) | 161.8 (30.81) | t=0.236 (df 2221), P=.813 |
| Mean diastolic BP 2010 (standard deviation) | 86.6 (16.28) | 87.3 (14.57) | t=0.375 (df 2221), P=.708 |
| Hypertension present 2010 (140/90 mm Hg) | 1494 (69.7%) | 59 (74.7%) | χ2 (1)=0.905, P=.341 |
Abbreviations: BP, blood pressure; df, degrees of freedom; IQR, interquartile range.