Table 1.
Summary of demographic, clinical, and consumer wearable data for participants with wearable recordings (N=692) in the SingHEART study cohort.
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Female (n=370, 53.5%) | Male (n=322, 46.5%) | |||
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Value, mean (SD) | Participants, na (%) | Value, mean (SD) | Participants, na (%) | |
| Age (years) | 45.47 (11.71) | 0 (0) | 44.46 (13.29) | 0 (0) | |
| BMI (kg/m2) | 22.87 (3.94) | 0 (0) | 24.33 (3.39) | 0 (0) | |
| WCb (cm) | 78.91 (10.98) | 0 (0) | 86.96 (9.86) | 0 (0) | |
| SBPc (mm Hg) | 122.51 (17.74) | 0 (0) | 132.20 (14.96) | 0 (0) | |
| DBPd (mm Hg) | 73.38 (12.80) | 0 (0) | 82.18 (10.97) | 1 (0.3) | |
| Wearable-derived resting heart rate (bpm; Fitbit) | 70.66 (6.55) | 0 (0) | 69.37 (6.59) | 0 (0) | |
| ECG_HRe (bpm) | 64.46 (9.17) | 10 (2.7) | 63.67 (9.87) | 12 (3.7) | |
| Total cholesterol (mmol/L) | 5.34 (0.94) | 6 (1.6) | 5.33 (0.97) | 5 (1.6) | |
| LDLf (mmol/L) | 3.32 (0.81) | 7 (1.9) | 3.40 (0.89) | 6 (1.9) | |
| HDLg (mmol/L) | 1.59 (0.32) | 6 (1.6) | 1.36 (0.30) | 5 (1.6) | |
| TGsh (mmol/L) | 0.99 (0.51) | 6 (1.6) | 1.30 (0.76) | 5 (1.6) | |
| Glucose (mmol/L) | 5.17 (0.49) | 8 (2.2) | 5.36 (0.71) | 5 (1.6) | |
| Average daily step counti | 10,349.81 (4180.35) | 30 (8.1) | 10,972.86 (3919.10) | 20 (6.2) | |
| Average daily sedentary minutes | 633.45 (96.48) | 102 (27.6) | 656.49 (95.58) | 88 (27.3) | |
| Average daily sleep minutes | 395.92 (61.18) | 102 (27.6) | 374.49 (65.15) | 88 (27.3) | |
aRefers to number of participants with missing or incomplete values for the respective fields.
bWC: waist circumference.
cSBP: systolic blood pressure.
dDBP: diastolic blood pressure.
eECG_HR: electrocardiogram heart rate.
fLDL: low-density lipoprotein.
gHDL: high-density lipoprotein.
hTG: triglyceride.
iThe average daily step count was derived by taking the sum of steps for each day and then averaging over days. Only days with ≥20 hours of valid data were considered.