Table 2.
Agreement between the double sensor, esophageal, and tympanic sensors at different time points, room temperature settings, and study groups.
| Warm room condition (T = 23.4 ± 0.4°C) | |||||||
|---|---|---|---|---|---|---|---|
| Time | Groups | Agreement with esophageal sensor | Agreement with tympanic sensor | ||||
| r (p) | CCC (CI) | MD (LoA), °C | r (p) | CCC (CI) | MD (LoA), °C | ||
| 3 min | Overall | 0.43 (<0.05) | 0.12 (0.003; 0.24) | −0.54 (−3.42; 2.34) | 0.76 (<0.0001) | 0.26 (0.10; 0.40) | 2.56 (0.58; 4.54) |
| Group A | 0.32 (0.37) | 0.03 (−0.04; 0.10) | −1.85 (−3.55; −0.15) | 0.34 (0.34) | 0.07 (−0.08; 0.21) | 2.11 (0.26; 3.96) | |
| Group B | 0.21 (0.53) | 0.07 (−0.15; 0.28) | 0.65 (−0.48; 1.79) | −0.05 (0.89) | −0.004 (−0.05; 0.05) | 2.97 (1.17; 4.78) | |
| 6 min | Overall | 0.40 (0.07) | 0.23 (−0.01; 0.45) | −0.15 (−2.25; 1.94) | 0.62 (<0.005) | 0.15 (0.03; 0.26) | 2.56 (0.75; 4.38) |
| Group A | 0.24 (0.51) | 0.08 (−0.15; 0.30) | −1.04 (−2.41; 0.33) | 0.50 (0.14) | 0.09 (−0.04; 0.21) | 2.12 (0.68; 3.57) | |
| Group B | 0.17 (0.61) | 0.06 (−0.15; 0.26) | 0.65 (−0.49; 1.79) | −0.06 (0.86) | −0.005 (−0.05; 0.04) | 2.96 (1.15; 4.78) | |
| 9 min | Overall | 0.40 (0.07) | 0.22 (−0.006; 0.43) | 0.09 (−1.51; 1.69) | 0.54 (<0.05) | 0.09 (0.008; 0.16) | 2.74 (1.13; 4.35) |
| Group A | 0.42 (0.23) | 0.18 (−0.12; 0.45) | −0.56 (−1.52; 0.39) | 0.37 (0.30) | 0.03 (−0.03; 0.10) | 2.50 (1.12; 3.88) | |
| Group B | 0.26 (0.45) | 0.08 (−0.13; 0.28) | 0.69 (−0.38; 1.76) | −0.03 (0.93) | −0.002 (−0.05; 0.05) | 2.95 (1.19; 4.70) | |
| Cold room condition (T = −18.7 ± 1.0°C) | |||||||
| Agreement with esophageal sensor | Agreement with tympanic sensor | ||||||
| Time | Groups | r (p) | CCC (CI) | MD (LoA), °C | r (p) | CCC (CI) | MD (LoA), °C |
| 3 min | Overall | 0.10 (0.68) | 0.006 (−0.02; 0.03) | 3.05 (0.91; 5.18) | −0.24 (0.29) | −0.009 (−0.03; 0.009) | 9.94 (5.10; 14.8) |
| Group A | −0.28 (0.44) | −0.02 (−0.06; 0.03) | 2.67 (0.36; 4.98) | 0.21 (0.56) | 0.007 (−0.02; 0.03) | 9.76 (6.21; 13.3) | |
| Group B | 0.43 (0.18) | 0.02 (−0.01; 0.06) | 3.39 (1.59; 5.19) | −0.64 (<0.05) | −0.02 (−0.06; 0.006) | 10.1 (4.17; 16.0) | |
| 6 min | Overall | 0.06 (0.79) | 0.005 (−0.03; 0.04) | 2.82 (0.01; 5.64) | −0.27 (0.24) | −0.01 (−0.03; 0.009) | 10.8 (5.26; 16.3) |
| Group A | −0.38 (0.27) | −0.03 (−0.10; 0.03) | 2.18 (−0.89; 5.25) | 0.09 (0.80) | 0.004 (−0.02; 0.03) | 10.3 (6.23; 14.4) | |
| Group B | 0.47 (0.14) | 0.03 (−0.01; 0.07) | 3.41 (1.33; 5.48) | −0.67 (<0.05) | −0.03 (−0.06; 0.005) | 11.2 (4.56; 17.9) | |
| 9 min | Overall | 0.02 (0.94) | 0.002 (−0.05; 0.06) | 2.16 (−0.89; 5.22) | −0.19 (0.42) | −0.009 (−0.03; 0.01) | 10.7 (5.32; 16.1) |
| Group A | −0.32 (0.37) | −0.05 (−0.17; 0.07) | 1.44 (−1.88; 4.77) | 0.11 (0.76) | 0.005 (−0.03; 0.04) | 10.1 (5.75; 14.5) | |
| Group B | 0.28 (0.41) | 0.02 (−0.03; 0.07) | 2.82 (0.60; 5.04) | −0.58 (0.06) | −0.02 (−0.05; 0.007) | 11.3 (5.08; 17.5) | |
Data are given as Pearson’s correlation coefficient (r) with p-value (p), Lin’s concordance correlation coefficient (CCC) with confidence interval (CI), and mean difference or bias (MD) and limits of agreement (LoA, mean ± 1.96 standard deviation) between the forehead double sensor (DS) and the esophageal/tympanic sensors.