Table 1.
Primary objective and outcome measures.
| Outcomes | Objective | Evaluation | |||
| Primary |
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Mean difference between ARIDAa and VEPb RRc count | 1 | ARIDA agreement | ||
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Mean difference between RR counts from two ARIDA devices started simultaneously | 1 | ARIDA consistency | ||
| Secondary |
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RMSDd between ARIDA and VEP RR counts | 1 | ARIDA agreement | ||
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Percentage ARIDA RR counts ±2 breaths from VEP RR count | 1 | ARIDA agreement | ||
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Absolute mean difference between ARIDA and VEP RR count | 1 | ARIDA agreement | ||
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Positive and negative percentage agreement between ARIDA and VEP RR classification | 1 | ARIDA agreement | ||
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Percentage unsuccessful attempts with ARIDA | 1 | ARIDA agreement | ||
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Percentage failures (3 unsuccessful attempts) with ARIDA | 1 | ARIDA agreement | ||
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Mean time taken to get an ARIDA RR count | 1 | ARIDA agreement | ||
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RMSD between RR counts from two ARIDA devices started simultaneously | 1 | ARIDA consistency | ||
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RMSD of time taken to get ARIDA RR count for two ARIDA devices started simultaneously | 1 | ARIDA consistency | ||
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Mean difference between ECe and VEP RR count | 2 | EC agreement | ||
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Mean difference between RR counts from two simultaneous ECs | 2 | EC consistency | ||
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RMSD between RR counts from two simultaneous ECs | 2 | EC agreement | ||
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Percentage EC counts ±2 breaths from VEP RR count | 2 | EC agreement | ||
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Absolute mean difference between EC and VEP RR count | 2 | EC agreement | ||
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Positive and negative percentage agreement between EC and VEP RR classification | 2 | EC agreement | ||
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Percentage unsuccessful attempts for EC RR count | 2 | EC agreement | ||
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Percentage failures (3 unsuccessful attempts) for EC RR count | 2 | EC agreement | ||
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RMSD between RR counts for two simultaneous ECs | 2 | EC consistency | ||
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Difference between RR at baseline and after 1, 3, and 5 minutes after ARIDA attachment | 3 | Fluctuation | ||
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RR trend plotted on a line graph before (baseline) and 1, 3, and 5 minutes after ARIDA attachment | 3 | Fluctuation | ||
aARIDA: Acute Respiratory Infection Diagnostic Aid (Philips Children’s Respiration Monitor device).
bVEP: video expert panel (reference standard).
cRR: respiratory rate.
dRMSD: root mean squared difference.
eEC: expert clinician.