Table 3.

Factor loadings with the strongest loading for each symptom item given in bold

	1	2	3	4	5
Concentration difficulties	.695	.145	.273	.216	.260
Depressed	.667	.084	.149	.235	.248
Worried	.649	.072	.154	.298	.239
Tensed/nervous	.644	.046	.189	.317	.210
Absent-minded	.613	.159	.210	.107	.223
General discomfort	.607	.080	.152	.428	.182
Irritable/edgy	.599	.090	.170	.174	.322
Memory difficulties	.564	.205	.263	.172	.142
Fatigue	.545	.142	.243	.102	.466
Sleep disturbance	.402	.163	.209	.101	.299
Coughing	.119	.683	.106	.240	.072
Throat irritation/hoarseness	.119	.665	.176	.239	.122
Shortness of breath	.174	.656	.124	.528	-.131
Excessive mucus production	.141	.587	.196	.246	-.057
Postnasal drip	.128	.564	.273	.106	.137
Nasal congestion/discharge	.133	.555	.194	.059	.327
Sneezing	.139	.555	.175	.064	.349
Irritation/dryness of the nasal mucosa	.145	.497	.408	.061	.236
Asthma or wheezing	.044	.476	.093	.397	-.253
Facial itching/stinging/tightness/heat	.205	.184	.691	.201	.076
Facial redness	.221	.136	.689	.134	.074
Dry facial skin	.259	.133	.599	.057	.266
Dry eyes	.090	.238	.509	.169	.213
Body itching	.207	.197	.478	.154	.147
Eye irritation/burning	.192	.350	.460	.173	.247
Chest discomfort	.238	.188	.143	.602	.106
Heart pounding	.264	.126	.206	.567	.136
Nausea	.270	.167	.107	.493	.424
Dizziness/lightheadedness	.238	.159	.254	.476	.313
Abdominal gas	.217	.167	.216	.040	.581
Abdominal swelling/bloating	.267	.114	.220	.195	.562
Headache	.273	.129	.069	.173	.535
Head fullness	.359	.187	.215	.307	.438
Head pressure	.281	.078	.162	.367	.399