A comprehensive urban programme to reduce energy poverty and its effects on health and wellbeing of citizens in six European countries: study protocol of a controlled trial

Table 3 Instruments and variables collected in intervention arm

Variable	Instrument/indicator	Data source	Timeline
Respiratory & cardiovascular function indicators	Peak flow	Internet of Things (IoT) home health control devices	Monthly (30 days)
	SpO₂
	Blood pressure
	Pittsburgh Sleep Quality Index [38]		Every 3 months
Household conditions: temperature	Celsius Degree	IoT DT home sensors	Real time monitoring
Household conditions: humidity	% Relative humidity
Household conditions: air quality	CO₂ and CO concentration
Qualitative interviews	Impressions, comments, experience and subjective perceptions captured in focus groups and interviews & codified	Qualitative analysis codified records	3–6 months, 12–15 months

ISSN: 1471-2458