Research Article

Postmarketing Reevaluation of Chinese Traditional Therapy Kangbingdu Oral Liquid in the Treatment of the Common Cold

Table 2

Efficacy data.

VariableKangbingdu liquidPlaceboDifference (95%CI) value

Primary outcomen = 1986n = 661
 Total- scores8.5 (8.3 to 8.7)8.4 (8.1 to 8.7)
 Total scores on day 5, mean(95%CI)1.10 (1.00 to 1.20)2.05 (1.82 to 2.28)
 Change on day 5, adjusted mean(95%CI)7.39 (7.26 to 7.51)6.43 (6.24 to 6.62)0.96 (0.75 to 1.16)<0.0001

Secondary outcomes

Aversion to windn = 830 (%)n = 281 (%)
 Symptom resolution rate on day 2275 (33.13)63 (22.42)−10.71 (−16.55 to -−4.88)0.0007
 Symptom resolution rate on day 3500 (60.24)151 (53.74)−6.5 (−13.22 to 0.21)0.0557
 Symptom resolution rate on day 4672 (80.96)204 (72.60)−8.37 (-14.23 to −2.51)0.0030
 Symptom resolution rate on day 5754 (90.84)228 (81.14)−9.7 (−14.68 to −4.73)< 0.0001

Aversion to coldn= 912 (%)n = 304 (%)
 Symptom resolution rate on day 2353 (38.71)74 (24.34)−14.36 (−20.13 to −8.6)< 0.0001
 Symptom resolution rate on day 3606 (66.45)156 (51.32)−15.13 (−21.53 to −8.73)< 0.0001
 Symptom resolution rate on day 4758 (83.11)219 (72.04)−11.07 (−16.67 to −5.47)< 0.0001
 Symptom resolution rate on day 5843 (92.43)258 (84.87)−7.57 (−11.94 to −3.19)< 0.0001

Fevern = 805 (%)n = 267 (%)
 Symptom resolution rate on day 2321 (39.88)63 (23.60)−16.28 (−22.39 to −10.17)< 0.0001
 Symptom resolution rate on day 3563 (69.94)137 (51.31)−18.63 (-25.41 to −11.85)< 0.0001
 Symptom resolution rate on day 4700 (86.96)205 (76.78)−10.18 (−15.75 to −4.6)< 0.0001
 Symptom resolution rate on day 5766 (95.16)230 (86.14)−9.01 (−13.41 to −4.61)< 0.0001

Coughn = 1163 (%)n = 410 (%)
 Symptom resolution rate on day 2225 (19.35)49 (11.95)−7.4 (−11.27 to −3.52)0.0007
 Symptom resolution rate on day 3425 (36.54)102 (24.88)−11.67 (−16.68 to −6.65)< 0.0001
 Symptom resolution rate on day 4614 (52.79)168 (40.98)−11.82 (−17.38 to −6.26)< 0.0001
 Symptom resolution rate on day 5833 (71.63)229 (55.85)−15.77 (−21.23 to −10.31)< 0.0001

Stuffyn = 1318 (%)n = 415 (%)
 Symptom resolution rate on day 2288 (21.85)47 (11.33)−10.53 (−14.3 to −6.75)< 0.0001
 Symptom resolution rate on day 3591 (44.84)139 (33.49)−11.35 (−16.62 to −6.07)< 0.0001
 Symptom resolution rate on day 4876 (66.46)228 (54.94)−11.52 (−16.95 to −6.1)< 0.0001
 Symptom resolution rate on day 51133 (85.96)295 (71.08)−14.88 (−19.63 to −10.13)< 0.0001

Runny nosen = 1392 (%)n = 473 (%)
 Symptom resolution rate on day 2317 (22.77)62 (13.11)−9.67 (−13.42 to −5.91)< 0.0001
 Symptom resolution rate on day 3639 (45.91)161 (34.04)−11.87 (−16.88 to −6.86)< 0.0001
 Symptom resolution rate on day 4927 (66.59)244 (51.59)−15.01 (−20.15 to −9.87)< 0.0001
 Symptom resolution rate on day 51150 (82.61)326 (68.92)−13.69 (−18.31 to −9.07)< 0.0001

Sore throatn = 1430 (%)n = 475 (%)
 Symptom resolution rate on day 2301 (21.05)64 (13.47)−7.58 (−11.3 to −3.85)0.0003
 Symptom resolution rate on day 3613 (42.87)152 (32.00)−10.87 (−15.78 to −5.95)< 0.0001
 Symptom resolution rate on day 4928 (64.90)252 (53.05)−11.84 (−16.97 to −6.72)< 0.0001
 Symptom resolution rate on day 51183 (82.73)330 (69.47)−13.25 (−17.84 to −8.67)< 0.0001

Muscular sorenessn = 910 (%)n = 290 (%)
 Symptom resolution rate on day 2356 (39.12)66 (22.76)−16.36 (−22.14 to −10.59)< 0.0001
 Symptom resolution rate on day 3579 (63.63)148 (51.03)−12.59 (−19.14 to −6.04)0.0001
 Symptom resolution rate on day 4757 (83.19)211 (72.76)−10.43 (−16.1 to −4.76)< 0.0001
 Symptom resolution rate on day 5834 (91.65)237 (81.72)−9.92 (−14.72 to −5.13)< 0.0001

Headachen = 1029 (%)n = 338 (%)
 Symptom resolution rate on day 2427 (41.50)94 (27.81)−13.69 (−19.33 to −8.04)< 0.0001
 Symptom resolution rate on day 3675 (65.60)204 (60.36)−5.24 (−11.21 to 0.73)0.0809
 Symptom resolution rate on day 4847 (82.31)252 (74.56)−7.76 (−12.95 to −2.56)0.0018
 Symptom resolution rate on day 5947 (92.03)277 (81.95)−10.08 (−14.5 to −5.66)< 0.0001

Fatiguen = 1160 (%)n = 394 (%)
 Symptom resolution rate on day 2395 (34.05)79 (20.05)−14 (−18.8 to −9.2)< 0.0001
 Symptom resolution rate on day 3702 (60.52)173 (43.91)−16.61 (−22.26 to −10.96)< 0.0001
 Symptom resolution rate on day 4874 (75.34)259 (65.74)−9.61 (−14.91 to −4.31)0.0002
 Symptom resolution rate on day 51019 (87.84)301 (76.40)−11.45 (−16.04 to −6.85)< 0.0001

Sweatn = 557 (%)n = 176 (%)
 Symptom resolution rate on day 2255 (45.78)61 (34.66)−11.12 (−19.28 to −2.96)0.0094
 Symptom resolution rate on day 3404 (72.53)102 (57.95)−14.58 (−22.76 to −6.4)0.0003
 Symptom resolution rate on day 4482 (86.54)128 (72.73)−13.81 (−20.97 to −6.64)< 0.0001
 Symptom resolution rate on day 5503 (90.31)141 (80.11)−10.19 (−16.58 to −3.8)0.0003

Time for body temperature to return to normaln = 579n = 196
 P25 (95%CI)28.00 (25.37 to 31.50)35.34 (26.00 to 43.17)0.0022
 P50 (95%CI)48.33 (46.00 to 52.50)64.59 (51.08 to 70.50)