Table 3.

Intraclass correlation coefficients for clinical characteristics over all study visits

ICC (95 % CI) [number of visits]	Mild (n = 52)	Moderate (n = 55)	Severe (n = 51)	All asthma (n = 158)
FEF2575, pre-BD	0.80 (0.73–0.87) [4.5]	0.76 (0.68–0.84) [4.6]	0.67 (0.56–0.77) [4.7]	0.82 (0.78–0.86) [4.6]
FEV1/FVC, pre-BD	0.86 (0.80–0.91) [4.5]	0.79 (0.71–0.86) [4.6]	0.84 (0.77–0.89) [4.7]	0.88 (0.85–0.90) [4.6]
FEV1 % predicted, pre-BD	0.72 (0.62–0.81) [4.5]	0.60 (0.48–0.71) [4.6]	0.64 (0.52–0.75) [4.7]	0.81 (0.77–0.85) [4.6]
FVC % predicted, pre-BD	0.79 (0.71–0.86) [4.5]	0.62 (0.51–0.73) [4.5]	0.75 (0.66–0.83) [4.7]	0.79 (0.74–0.83) [4.6]
PEFR, pre-BD	0.83 (0.76–0.89) [4.5]	0.81 (0.73–0.87) [4.6]	0.86 (0.80–0.91) [4.7]	0.86 (0.83–0.89) [4.6]
FEV1 change post-BD (% predicted)	0.45 (0.32–0.59) [4.5]	0.39 (0.26–0.53) [4.5]	0.39 (0.26–0.54) [4.6]	0.42 (0.35–0.50) [4.5]
FEV1 change post-BD (L)	0.45 (0.32–0.59) [4.5]	0.53 (0.41–0.66) [4.5]	0.47 (0.34–0.61) [4.6]	0.48 (0.41–0.56) [4.5]
FENO, ppb (log)	0.64 (0.51–0.75) [3.6]	0.78 (0.69–0.86) [3.6]	0.75 (0.65–0.84) [3.6]	0.73 (0.67–0.78) [3.6]
ACQ-7	0.61 (0.48–0.73) [3.6]	0.57 (0.43–0.69) [3.6]	0.55 (0.41–0.69) [3.7]	0.65 (0.58–0.71) [3.6]
AQLQ	0.74 (0.63–0.82) [3.6]	0.82 (0.74–0.88) [3.6]	0.78 (0.68–0.85) [3.7]	0.79 (0.74–0.83) [3.6]