Table 3 Descriptive and statistical tests for heart rate, respiration rate, and LFP/HFP ratio among stage, exposure, and interaction
From: Effects of short-term radiation emitted by WCDMA mobile phones on teenagers and adults
Heart rate (bpm) | Respiration rate (bpm) | LFP/HFP ratio | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Adult | Teenager | Adult | Teenager | Adult | Teenager | |||||||
Sham | Real | Sham | Real | Sham | Real | Sham | Real | Sham | Real | Sham | Real | |
Stage | Mean (standard error) | |||||||||||
I | 76.6 (2.1) | 79.1 (1.9) | 79.3 (2.1) | 80.9 (1.7) | 18.0 (0.5) | 18.3 (0.5) | 19.3 (0.5) | 19.2 (0.4) | 1.9 (0.3) | 2.3 (0.4) | 1.6 (0.3) | 1.5 (0.3) |
II | 76.6 (2.1) | 77.9 (1.7) | 79.8 (1.8) | 80.4 (1.6) | 18.2 (0.4) | 18.1 (0.6) | 19.3 (0.5) | 19.3 (0.6) | 2.6 (0.4) | 3.1 (0.7) | 1.7 (0.3) | 2.0 (0.4) |
III | 75.4 (2.0) | 77.5 (1.7) | 80.7 (1.8) | 80.7 (1.7) | 18.4 (0.5) | 18.2 (0.5) | 19.2 (0.5) | 19.8 (0.5) | 2.3 (0.3) | 3.6 (1.0) | 2.6 (0.5) | 1.9 (0.3) |
IV | 76.5 (2.1) | 77.1 (1.7) | 81.2 (1.6) | 81.0 (1.7) | 18.2 (0.5) | 17.9 (0.6) | 19.7 (0.5) | 20.3 (0.5) | 3.2 (0.7) | 2.9 (0.6) | 2.3 (0.5) | 2.3 (0.4) |
Factor | P-value (F - statistic) | |||||||||||
Exposure | 0.328 (0.997) | 0.671 (0.184) | 0.843 (0.040) | 0.433 (0.635) | 0.307 (1.088) | 0.661 (0.197) | ||||||
Stage | 0.211 (1.644) | 0.323 (1.180) | 0.677 (0.510) | 0.067 (2.481) | 0.033* (3.723) | 0.002* (5.492) | ||||||
Interaction (exposure and stage) | 0.324 (1.168) | 0.209 (1.600) | 0.633 (0.575) | 0.444 (0.903) | 0.267 (1.350) | 0.222 (1.562) | ||||||