Table 3

Characteristics of participants in the CHinese Electronic health Records Research in Yinzhou (CHERRY) Study, by sex

MenWomenOverall
n=512 043% having at least one measurementn=541 522% having at least one measurementn=1053 565% having at least one measurement
Age at first registration (years)40.17±15.17100%39.24±15.56100%39.69±15.38100%
Region (n (%))98.93%98.45%98.68%
 Rural354 524 (69.99%)364 120 (68.30%)718 644 (69.12%)
 Urban152 038 (30.01%)169 017 (31.70%)321 055 (30.88%)
Education (n (%))79.05%79.10%79.07%
 Junior high school or lower324 438 (80.16%)352 534 (82.30%)676 972 (81.26%)
 Senior high school or higher80 307 (19.84%)75 801 (17.70%)156 108 (18.74%)
Smoking status (n (%))88.79%85.60%87.15%
 Never smoker271 870 (59.80%)440 834 (95.11%)712 704 (77.62%)
 Former smoker23 099 (5.08%)2828 (0.61%)25 927 (2.82%)
 Current smoker159 664 (35.12%)19 861 (4.28%)179 525 (19.55%)
Alcohol use (n (%))88.74%85.57%87.11%
 ≥3 days per week87 064 (19.16%)3608 (0.78%)90 672 (9.88%)
 <3 days per week43 811 (9.64%)3713 (0.80%)47 524 (5.18%)
 Never drinker323 518 (71.20%)456 059 (98.42%)779 577 (84.94%)
Body mass index (BMI) (kg/m2)22.71±2.3286.97%22.25±2.5784.06%22.47±2.4685.47%
Systolic blood pressure (mm Hg)128.09±14.5641.37%126.16±15.1140.53%127.11±14.8740.94%
Diastolic blood pressure (mm Hg)79.89±9.7641.35%78.13±10.0240.52%79.00±9.9340.93%