Characteristic Training cohort Training cohort Training cohort Validation cohort Validation cohort Validation cohort
No pneumonia Incident pneumonia P-value No pneumonia Incident pneumonia P-value
participants 99 106 47 47
Age(year) 32.00 (14.00-86.00) 61.50 (17.00-97.00) <0.001 39.00 (17.00-79.00) 69.00 (2.00-89.00) <0.001
Gender 0.718 0.668
Female 52 (52.53%) 53 (50.00%) 29 (61.70%) 31 (65.96%)
Male 47 (47.47%) 53 (50.00%) 18 (38.30%) 16 (34.04%)
CRP(mg/L) 6.82 (0.00-154.30) 18.60 (0.47-359.14) <0.001 1.66 (0.00-115.27) 28.21 (0.00-236.13) <0.001
WBC(109/L) 5.40 (1.41-10.36) 5.53 (2.36-15.56) 0.038 7.35 (2.43-9.42) 6.82 (2.54-14.64) 0.511
RBC(1012/L) 4.86 (3.31-6.44) 4.79 (2.78-6.55) 0.178 4.90 (3.84-6.29) 4.46 (3.30-5.62) <0.001
HGB(g/L) 146.00 (67.00-184.00) 145.00 (93.00-192.00) 0.224 141.00 (116.00-173.00) 132.00 (100.00-171.00) 0.002
PLT(109/L) 185.00 (98.00-361.00) 173.00 (51.00-460.00) 0.090 269.00 (136.00-424.00) 221.00 (59.00-579.00) 0.008
%Neu(%) 69.10 (29.00-89.30) 70.65 (38.80-94.10) 0.019 61.30 (44.70-82.10) 71.40 (44.70-92.60) <0.001
%Lymph(%) 19.70 (4.40-60.60) 20.00 (2.40-53.80) 0.189 30.70 (8.90-47.60) 19.40 (5.80-47.00) <0.001
%Mon(%) 9.40 (3.70-29.50) 7.90 (1.40-20.10) <0.001 7.00 (3.40-14.50) 7.20 (1.50-19.30) 0.295
%Eos(%) 0.60 (0.00-8.00) 0.25 (0.00-5.90) 0.016 1.20 (0.00-11.20) 0.70 (0.00-3.20) 0.017
#Eos(109/L) 0.03 (0.00-0.35) 0.01 (0.00-0.36) 0.057 0.08 (0.00-0.91) 0.04 (0.00-0.23) 0.022
%Bas(%) 0.20 (0.00-7.50) 0.10 (0.00-0.80) 0.002 0.20 (0.00-0.70) 0.10 (0.00-0.40) 0.004
#Bas(109/L) 0.01 (0.00-0.32) 0.01 (0.00-0.03) 0.049 0.01 (0.00-0.04) 0.01 (0.00-0.02) 0.001
#Neu(109/L) 3.45 (0.72-8.25) 3.75 (0.91-14.36) 0.012 4.26 (1.47-6.85) 4.67 (1.46-12.80) 0.188
#Lymph(109/L) 1.05 (0.23-3.56) 1.06 (0.24-5.47) 0.864 2.05 (0.73-3.34) 1.19 (0.55-3.94) <0.001
#Mon(109/L) 0.48 (0.19-1.50) 0.43 (0.08-1.51) 0.216 0.48 (0.17-0.74) 0.52 (0.14-1.14) 0.388
HCT(%) 42.10 (22.40-52.10) 41.15 (26.00-53.30) 0.135 42.50 (36.20-52.00) 39.80 (30.90-49.00) <0.001
MCV(fL) 87.60 (55.30-98.10) 87.55 (62.00-99.40) 0.597 89.30 (66.10-105.00) 89.70 (69.30-102.50) 0.427
MCHC(g/L) 350.00 (301.00-369.00) 352.00 (298.00-376.00) 0.147 331.00 (311.00-352.00) 333.00 (315.00-353.00) 0.198
MCH(Pg) 30.70 (16.70-33.90) 30.90 (20.10-35.20) 0.286 30.10 (21.00-34.40) 30.10 (22.30-35.30) 0.276
RDW-SD(fL) 39.40 (33.30-55.50) 40.15 (33.70-49.60) 0.040 40.50 (36.00-48.50) 40.20 (32.50-49.90) 0.771
RDW-CV(%) 12.20 (11.30-19.90) 12.40 (11.30-17.40) 0.096 12.10 (11.10-15.90) 12.20 (10.90-14.00) 0.803
PDW(%) 16.20 (10.20-17.10) 16.30 (15.40-17.80) 0.014 16.20 (15.60-16.80) 16.30 (15.70-17.40) 0.112
MPV(fL) 9.50 (7.30-11.90) 9.80 (8.00-12.40) 0.020 9.30 (7.70-11.70) 9.50 (7.20-12.30) 0.122
PCT(%) 0.18 (0.10-0.34) 0.17 (0.05-0.41) 0.247 0.25 (0.14-0.36) 0.20 (0.06-0.53) 0.010
P-LCR (%) 23.80 (8.80-41.90) 26.10 (12.40-44.90) 0.033 21.70 (12.60-39.20) 24.20 (10.00-42.60) 0.226