Table 2. Mean values and differences for vital signs measured by gold standard, nurse and Checkme.
| Heart Rate (beats/min) | Systolic Blood pressure (mm Hg) | Temperature (°C) | Respiratory Rate (breaths/min) | Saturation (%) | MEWS | |
|---|---|---|---|---|---|---|
| Gold standard: | ||||||
| Mean of measure 1 and 2 ± SD | 74.1 ± 11.9 | 127.4 ± 17.4 | 36.9 ± 0.6 | 17.9 ± 4.2 | 95.9 ± 1.6 | 1.5 ± 1.4 |
| Measure 1 vs measure 2: | ||||||
| Mean difference ± SDa | -0.5 ± 3.8 | 0.4 ± 6.4 | 0.1 ± 0.3b | -0.2 ± 1.7 | 0.1 ± 0.9 | 0.1 ± 0.8 |
| Categories n (%) | ≤ 5: 59 (86.8) | ≤ 5: 46 (67.7) | ≤ 0.5: 65 (95.6) | ≤ 2: 60 (88.2) | ≤ 2: 67 (98.5) | ≥+2: 5 (7.4) |
| 6–9: 8 (11.7) | 6–14: 20 (29.4) | 0.5–0.9: 1 (1.5) | 3–4: 7 (10.3) | 3–4: 1 (1.5) | 0–1: 62 (91.1) | |
| ≥ 10: 1 (1.5) | ≥ 15: 2 (2.9) | ≥ 1.0: 2 (2.9) | ≥ 5: 1 (1.5) | ≥ 5: 0 (0) | ≥ -2: 1 (1.5) | |
| Nurse: | ||||||
| Mean ± SD | 73.5 ± 10.8 | 128.0 ± 18.3 | 37.1 ± 0.5 | 17.2 ± 2.2 | 96.3 ± 1.5 | 0.7 ± 1.1 |
| Nurse vs Gold Standard: | ||||||
| Mean difference ± SD)a | -0.8 ± 5.8 | 0.8 ± 9.7 | 0.2 ± 0.3b | -0.8 ± 4.3 | 0.4 ± 1.6 | -0.8 ± 1.2b |
| Categories n (%) | ≤ 5: 38 (65.5) | ≤ 5: 27 (46.6) | ≤ 0.5: 48 (82.8) | ≤ 2: 27 (46.6) | ≤ 2: 50 (86.2) | ≥ +2: 1 (1.7) |
| 6–9: 16 (27.6) | 6–14: 26 (44.8) | 0.6–0.9: 9 (15.5) | 3–4: 14 (24.1) | 3–4: 7 (12.1) | 0–1: 43 (74.1) | |
| ≥ 10: 4 (6.9) | ≥ 15: 5 (8.6) | ≥ 1.0: 1 (1.7) | ≥ 5: 17 (29.3) | ≥ 5: 1 (1.7) | ≥ -2: 14 (24.1) | |
| Checkme: | ||||||
| Mean ± SD | 74.6 ± 11.6 | 125.0 ± 19.2 | 35.7 ± 4.4 | 18.5 ± 4.5 | 96.8 ± 3.8 | 1.4 ± 1.6 |
| Checkme vs Gold Standard: | ||||||
| Mean difference ± SDa | 0.7 ± 4.0 | -2.7 ± 15.2 | -0.7 ± 0.6b | n.a. | 0.9 ± 4.2 | 0.1 ± 1.2 |
| Categories n (%) | ≤ 5: 57 (83.8) | ≤ 5: 25 (36.8) | ≤ 0.5: 25 (37.9) | ≤ 2: 47 (69.1) | ≥ +2: 8 (12.3) | |
| 6–9: 10 (14.7) | 6–14: 26 (38.2) | 0.6–0.9: 24 (36.4) | 3–4: 16 (23.5) | 0–1: 55 (84.6) | ||
| ≥ 10: 1 (1.5) | ≥ 15: 17 (25.0) | ≥ 1.0: 17 (25.7) | ≥ 5: 5 (7.4) | ≥ -2: 2 (3.1) |
aPositive (negative) value indicates higher (lower) mean value in measure 1 than in measure 2 of gold standard, and in nurse or Checkme measure than gold standard;
bp < 0.01 compared with gold standard