Table 2.
Comparison of clinical symptoms among influenza‐positive and influenza‐negative cases in Kashmir, India
| Clinical feature | Influenza negative N = 173 n (%) | Influenza positive N = 21 n (%) | P value |
|---|---|---|---|
| Contact in last 7 days | 64 (37) | 14 (67) | 0·009 |
| Nasal discharge on examination | 44 (25) | 13 (62) | 0·0005 |
| Fever | 136 (79) | 17 (81) | 0·80 |
| Chills | 113 (65) | 17(81) | 0·15 |
| Rigors | 36 (21) | 7 (33) | 0·19 |
| Cough | 141 (82) | 18 (86) | 0·63 |
| Sputum production | 101 (58) | 13 (62) | 0·76 |
| Sore throat | 57 (33) | 8 (38) | 0·64 |
| Nasal discharge | 103 (60) | 16 (76) | 0·14 |
| Nasal stuffiness | 81 (47) | 14 (67) | 0·08 |
| Body ache | 115 (67) | 12 (57) | 0·39 |
| Malaise | 40 (23) | 5 (24) | 1·00 |
| Vomiting | 25 (14) | 3 (14) | 1·00 |
| Breathlessness | 96 (56) | 15 (71) | 0·16 |
| Current smoker | 59 (34) | 5 (24) | 0·34 |
| Respiratory cases at home | 37 (21) | 7 (33) | 0·21 |
| Underlying OAD | 45 (26) | 6 (29) | 0·80 |
| Cyanosis | 41 (24) | 2 (10) | 0·17 |
| Accessory muscle usage | 52 (30) | 11(52) | 0·04 |
| Crepitations | 68 (39) | 8 (38) | 0·91 |
| Rhonchi/Wheeze | 48 (28) | 6 (29) | 0·94 |
| Hepatomegaly | 16 (9) | 2(10) | 1·00 |
| Pneumonia/Infiltrates on radiograph | 53 (31) | 9 (43) | 0·25 |
| Duration of symptoms (mean days, range) | 5·31 + 2·91 (1–15) | 4·81 ± 2·97 (1–15) | 0·67 |