Clinical symptoms and signs | Intermittent asthma (n = 537) | Persistent asthma (n = 373) | P trend | ||
---|---|---|---|---|---|
 | Mild (n = 246) | Moderate (n = 96) | Severe (n = 31) |  | |
Cough status (N, %) | Â | 0.0520 | |||
 No | 115 (21.42) | 39 (15.85) | 19 (19.79) | 10 (32.26) |  |
 Occasionala | 204 (37.99) | 84 (34.15) | 23 (23.96) | 6 (19.35) | |
 Chronicb | 218 (40.60) | 123 (50.00) | 54 (56.25) | 15 (48.39) | |
Sputum status (N, %) | Â | 0.1757 | |||
 No | 178 (33.15) | 77 (31.30) | 27 (28.13) | 10 (32.26) |  |
 Occasionala | 199 (37.06) | 86 (34.96) | 30 (31.25) | 12 (38.71) | |
 Chronicb | 122 (22.72) | 71 (28.86) | 30 (31.25) | 6 (19.35) | |
 Purulent | 38 (7.08) | 12 (4.88) | 9 (9.38) | 3 (9.68) | |
Dyspnea (N, %)c |  | < 0.0001 | |||
 No | 179 (33.33) | 73 (29.67) | 15 (15.63) | 7 (22.58) |  |
 Mild | 175 (32.59) | 81 (32.93) | 16 (16.67) | 3 (9.68) | |
 Moderate | 129 (24.02) | 64 (26.02) | 44 (45.83) | 7 (22.58) | |
 Severe | 54 (10.06) | 28 (11.38) | 21 (21.88) | 14 (45.16) | |
Wheeze (yes, %) | 149 (27.75) | 62 (25.20) | 29 (30.21) | 17 (54.84) | 0.0564 |
Cyanosis (yes, %) | 33 (6.15) | 12 (4.88) | 8 (8.33) | 4 (12.90) | 0.2561 |