Table 3:

Mean (±SD) symptom burden for each item on the 21-item draft CRS-PRO at baseline. Symptoms were scored 0–4, with 4 representing the most severe (note that Item 12 and 15 are reverse scored). The italicized items denoted by XXX were removed in the abbreviated 12-item CRS-PRO after consideration of their individual psychometric properties.

	Baseline (mean±SD)
Physical Symptoms
1) I had difficulty breathing through my nosea	2.4±1.4
XXX 2) My nose was blockeda	2.3±1.3
3) I felt pressure in my faceb	1.7±1.4
4) My face hurtb	1.3±1.4
5) I had to blow my nose	2.6±1.3
6) I have been coughing	1.7±1.4
XXX 7) I had trouble clearing mucus from my throatc	1.8±1.4
8) I had mucus in my throatc	2±1.3
9) I had mucus in my nosed	2.9±0.98
XXX 10) I had mucus dripping from my nosed	1.9±1.3
Sensory Impairment
11) I had problems with my sense of smell	2.0±1.3
XXX 12) I was able to enjoy the taste of food.	1.6±1.3
Psychosocial Effects
13) My symptoms kept me awake at night.	1.5±1.3
14) I felt fatigued	1.7±1.4
XXX 15) My sleep was refreshing	2.5±1.2
XXX 16) I felt anxious about the uncertainty of my chronic rhinosinusitis	2±1.3
17) I worried that my condition will get worse.	2.1±1.4
XXX 18) I felt overwhelmed by my condition.	1.5±1.5
19) I was frustrated by my condition.	2.3±1.5
Impact
XXX 20) Because of my illness, some people avoided me.	0.36±0.69
XXX 21) Because of my illness, I felt embarrassed in social situations	1.1±1.2

^a,b,c,ddenotes dyads of rhinologic symptoms assessing a similar construct.