Table 1

Comparison of the baseline data between treatment and control group
Items Treatment group (n = 50) Control group (n = 49) P value*
Age (years) 64.33 ± 9.41 65.90 ± 10.73 0.436
Gender (male % ) 21/50 (42.0) 23/49 (46.9) 0.621
Medication history (positive %) 10/50 (20.0) 6/49 (12.2) 0.295
Smoking history (positive %) 7/50 (14.0) 9/49 (18.4) 0.555
Drinking history (positive %) 11/50 (22.0) 6/49 (12.2) 0.198
Respiratory symptoms score 8.86 ± 2.15 8.92 ± 2.33 0.897
Chronic cough (positive %) 46/50 (92.0) 47/49 (95.9) 0.692
Chronic expectoration (positive %) 43/50 (86.0) 43/49 (87.8) 0.796
Asthma/Dyspnea (positive %) 14/50 (28.0) 18/49 (36.7) 0.353
Chronic angina (positive %) 20/50 (40.0) 19/49 (38.8) 0.901
Chronic bronchitis (positive %) 31/50 (62.0) 27/49 (55.1) 0.486
Respiratory rate (times/min) 19.78 ± 2.33 20.33 ± 2.07 0.220
Heart rate (times/min) 80.10 ± 6.99 81.22 ± 6.99 0.426
HGB (mg/dL) 133.56 ± 12.43 129.65 ± 11.51 0.108
RBC (10 [9]/mm [3]) 4.51 ± 0.47 4.43 ± 0.54 0.418
WBC (10 [9]/mm [3]) 6.35 ± 1.34 6.69 ± 1.21 0.188
Neutrophil (10 [9]/mm [3]) 4.49 ± 1.20 4.76 ± 1.21 0.261
Scores of life quality (SF-36) 109.98 ± 16.33 107.94 ± 13.09 0.596

HGB, Hemoglobin; RBC, Red blood cell; WBC, white blood cell.

*Unpaired Student’s t-test or Mann–Whitney test was used to compare differences in mean or mean ranks of variables between the control group and treatment group. Chi-square test was used for categorical data.

Cai et al.

Cai et al. Nutrition Journal 2013 12:57   doi:10.1186/1475-2891-12-57

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