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Table 3 Estimated intervention effects, and changes within groups from baseline to month four, for five different sleep parameters

From: The longitudinal association between the use of antihypertensive medications and 24-hour sleep in nursing homes: results from the randomized controlled COSMOS trial

Outcomea Within-group change Intervention effect p-valueb n
Control Intervention
(95 % CI) (95% CI) (95 % CI)   
Total sleep time 16.0 (-29.6 – 61.6) -42.5* (-76.6 – -8.4) -58.5* (-115.5 – -1.6) 0.04 90
Sleep onset latency -7.2 (-33.4 – 18.7) 8.3 (-11.2 – 27.9) 15.6 (-16.9 – 48.2) 0.35 90
Wake after sleep onset 2.9 (-22.9 – 28.8) 18.3 (-1.1 – 37.7) 15.4 (-17.0 – 47.7) 0.35 90
Daytime sleep 10.6 (-20.9 – 42.2) 3.1 (-20.7 – 27.0) -7.5 (-47.1 – 32.0) 0.71 90
Early morning awakening -24.3 (-49.5 – 1.0) 18.3 (-1.1 – 37.7) 28.6 (-3.1 – 60.4) 0.07 90
  1. aReported as average minutes per day/night
  2. bp-value for intervention effect
  3. *p < 0.0