Table 1 Baseline characteristics of the study participants.
From: Prospective validation of smartphone-based heart rate and respiratory rate measurement algorithms
Heart rate (HR) study | Respiratory rate (RR) study | |
|---|---|---|
No. participants analyzed | 95 | 50 |
No. recordings | 352 | 50 (for each algorithm version*) |
Age (mean ± standard deviation) | 41.8 ± 15.0 | 50.0 ± 16.0 |
Age groups | ||
<40 years | 41 (43%) | 17 (34%) |
40–59 years | 39 (41%) | 21 (42%) |
≥60 years | 15 (16%) | 12 (24%) |
No. female (%) | 71 (75%) | 26 (52%) |
No. male (%) | 24 (25%) | 24 (48%) |
Race/ethnicity: n, % | ||
White, non-Hispanic | 25 (26%) | 18 (36%) |
White, Hispanic | 0 (0%) | 22 (44%) |
Black, non-Hispanic | 61 (64%) | 6 (12%) |
Black, Hispanic | 0 (0%) | 1 (2%) |
Asian/pacific islander | 7 (7%) | 3 (6%) |
Multiple races, non-Hispanic | 1 (1%) | 0 (0%) |
Multiple races, Hispanic | 1 (1%) | 0 (0%) |
Measured skin tone**: n (%) | ||
1 (Fitzpatrick types 1–3) | 31 (33%) | N/A |
2 (Fitzpatrick types 4–5) | 32 (34%) | |
3 (Fitzpatrick type 6) | 32 (34%) | |
Chronic respiratory conditions: n (%) | ||
None | N/A | 10 (20%) |
Asthma | 33 (66%) | |
COPD | 4 (8%) | |
Both | 3 (6%) | |
