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Table 4 Congestion Quantifier 7 results (ITT population)

From: Effects of nasal dilator strips on subjective measures of sleep in subjects with chronic nocturnal nasal congestion: a randomized, placebo-controlled trial

CQ7a Asymmetric placebo (n = 20) BRNS clear (n = 20) Asymmetric butterfly (n = 19)
Mean (SD) at baseline 19.20 (5.05) 18.70 (4.35) 16.79 (5.31)
Day 7
LS mean change from baseline (95% CI) − 5.14 (− 7.53 to − 2.74) − 6.85 (− 9.28 to − 4.41) − 8.18 (− 10.75 to − 5.62)
P value for comparison with placebo P = 0.2986 P = 0.0764
P value for comparison with BRNS P = 0.4258
Day 14
LS mean change from baseline (95% CI) − 5.10 (− 7.37 to − 2.83) − 8.04 (− 10.34 to − 5.73) − 6.92 (− 9.35 to − 4.49)
P value for comparison with placebo P = 0.0623 P = 0.2607
P value for comparison with BRNS P = 0.4820
  1. BRNS Breathe Right Nasal Strip, CI confidence interval, CQ7 Congestion Quantifier 7, ITT intent-to-treat, LS least square, SD standard deviation
  2. a CQ7 was calculated by adding the responses to the seven items on the CQ7 questionnaire for each subject. Each question was rated on a scale of 0 = none of the time, 1 = a little of the time, 2 = some of the time, 3 = most of the time, and 4 = all of the time