Table 4

The change in reported symptoms from P1 to P3
Number (%) with symptoms Change in Symptoms1
Baseline Follow-up No. Reduced No. Increased No. No Change P-value2
England
Respiratory symptoms N % N %
Median # of symptoms (IQR)3 1 (0, 3) 0 (0,1) 27 3 20 0.007
Any symptom 31 (61) 19 (37) 15 3 33 0.041
Wheezing/whistling 18 (35) 5 (10) 14 1 36 0.001
Shortness of Breath 11 (22) 6 (12) 7 2 42 0.180
Cough, morning 21 (41) 7 (14) 15 1 35 0.001
Cough, rest of day or night 15 (29) 10 (20) 7 2 42 0.180
Phlegm production 16 (31) 7 (14) 11 2 37 0.022
Sensory symptoms
Median # of symptoms (IQR) 1 (0, 1) 0 (0,1) 22 10 18 0.037
Any symptom 28 (55) 16 (31) 20 8 23 0.041
Eyes, red or irritated 12 (24) 6 (12) 10 4 37 0.180
Nose, runny or sneezing 18 (35) 12 (24) 12 6 32 0.238
Throat, sore or scratchy 10 (20) 3 (6) 9 2 40 0.065
All symptoms
Median # of symptoms (IQR) 2 (1, 4) 1 (0,2) 30 6 13 <0.001
Any symptom 39 (76) 25 (49) 18 4 29 0.017
Scotland
Respiratory symptoms
Median # of symptoms (IQR) 2 (0, 3) 1 (0,2) 49 24 54 0.015
Any symptom 86 (67) 70 (54) 23 7 99 0.042
Wheezing/whistling 42 (33) 29 (22) 21 8 100 0.024
Shortness of Breath 43 (33) 28 (22) 27 12 88 0.024
Cough, morning 39 (30) 28 (22) 21 10 98 0.071
Cough, rest of day or night 54 (42) 43 (33) 27 16 86 0.126
Phlegm production 50 (39) 36 (28) 20 6 103 0.009
Sensory symptoms
Median # of symptoms (IQR) 1 (0, 2) 1 (0,2) 46 26 57 0.033
Any symptom 89 (69) 69 (53) 31 11 87 0.011
Eyes, red or irritated 43 (33) 24 (19) 25 6 98 0.001
Nose, runny or sneezing 60 (47) 61 (47) 23 24 82 1.000
Throat, sore or scratchy 54 (42) 39 (30) 31 16 82 0.040
All symptoms
Median # of symptoms (IQR) 2 (1, 5) 2 (0,4) 59 31 37 0.011
Any symptom 104 (81) 87 (67) 6 23 100 0.016

The table shows only those who did not have a cold at either phase and is split into England (n = 51) and Scotland (n = 129).

1 Reduction – Symptoms at Baseline, none at follow-up: Increase No symptoms at baseline, symptoms at follow-up. For ‘median # of symptoms’ this is the number of people whose number of symptoms changed. For ‘any symptom’ this is the change in the number of people experiencing any symptom.

2 The p-value relates to the McNemar test for matched pairs, with exact probabilities based on a Binomial assumption with the exception of; Median number of symptoms which were tested using Mann–Whitney U test of equal medians.

3 The IQR is the inter-quartile range.

MacCalman et al.

MacCalman et al. BMC Public Health 2012 12:324   doi:10.1186/1471-2458-12-324

Open Data