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Table 1 Demographic factors of patients in different groups

From: Etiological analysis and predictive diagnostic model building of community-acquired pneumonia in adult outpatients in Beijing, China

  Groups
V(n = 122) M(n = 49) B(n = 33) MIX(n = 67) N(n = 229) P
Male sex (%) 74(60.7) 26(53.1) 25(75.8) 45(67.2) 120(52.4) >0.05
Age (years) 43(18–94) 32(18–75) 48(18–84) 33(18–80) 47(18–86) <0.05
18-44 63(51.6) 38(77.6) 14(42.4) 47(70.1) 110(48.0) >0.05
45-59 25(20.5) 6(12.2) 11(33.3) 6(9.0) 46(20.0) >0.05
≥60 34(27.9) 5(10.2) 8(24.2) 14(20.9) 73(31.9) >0.05
Smoking (%) 30(24.6) 10(20.4) 13(39.4) 13(19.4) 56(24.5) >0.05
Coexisting disease (%) 17(13.9) 5(10.2) 4(12.1) 5(7.5) 47(20.5) >0.05
Tumor (%) 3(2.5) 1(2.0) 0(0.0) 0(0.0) 3(1.3) >0.05
Coronary heart disease (%) 7(5.7) 3(6.1) 3(9.1) 2(3.0) 20(8.7) >0.05
Cardiac insufficiency (%) 2(1.6) 0(0.0) 0(0.0) 0(0.0) 5(2.2) >0.05
Cerebrovascular disease (%) 5(4.1) 1(2.0) 2(6.1) 2(3.0) 11(4.8) >0.05
Chronic nephropathy (%) 1(0.8) 1(2.0) 0(0.0) 0(0.0) 6(2.6) >0.05
Chronic hepatopathy (%) 1(0.8) 0(0.0) 0(0.0) 0(0.0) 3(1.3) >0.05
Diabetes mellitus (%) 4(3.2) 2(4.1) 1(3.0) 2(3.0) 21(9.2) >0.05
CAP hospitalization within 1year (%) 0(0.0) 0(0.0) 0(0.0) 0(0.0) 2(0.9) >0.05
COPD* (%) 4(3.2) 0(0.0) 0(0.0) 1(1.5) 3(1.3) >0.05
Autoimmune disease (%) 1(0.8) 0(0.0) 0(0.0) 0(0.0) 0(0.0) >0.05
Antibiotic pretreatment (%) 75(61.5) 35(71.4) 24(72.7) 42(62.7) 147(64.1) >0.05
  1. Notes: V: single viral infection; M: single mycoplasma pneumoniae infection; B: single bacterial infection; MIX: mixed infections; N: no pathogen detected.*COPD, chronic obstructive pulmonary disease.