Table 2.

Demographics of COPD Patients in the COPD-RD and APEX-COPD Registry

CharacteristicCOPD-RD (n = 17,192)APEX-COPD Registry (n = 1,354)P Value
Site, No. (%)
  Ohio8,722 (50.7)565 (41.7) 
  North Carolina6,038 (35.1)585 (43.2) 
  New York  1,149 (6.7)  79 (5.8) 
  Texas  811 (4.7)  63 (4.7) 
  Colorado  472 (2.7)  62 (4.6) 
Gender, No. (%)
  Female9,689 (56.4)759 (56.1).830
Age, y
  Mean (SD)    67.4 (11.3)  69.3 (10.1) 
  35-44, No. (%)  376 (2.2)  15 (1.1) 
  45-54, No. (%)1,646 (9.6)  68 (5.0).000
  55-64, No. (%)5,182 (30.1)355 (26.2) 
  65-74, (No. %)5,400 (31.4)509 (37.6) 
  75-84, No. (%)3,307 (19.2)305 (22.5) 
  ≥85 years, No. (%)1,281 (7.5)102 (7.5) 
BMI (kg/m2)a
  Mean (SD)    29.6 (11.1)  29.2 (8.3) 
  <18.5, underweight, No. (%)  813 (4.8)  57 (4.3).886
  18.5 to <25, normal, No. (%)4,408 (26.2)356 (26.6) 
  25 to <30, overweight, No. (%)4,670 (27.7)382 (28.6) 
  ≥30, obese, No. (%)6,958 (41.3)543 (40.6) 
Race and ethnicity, No. (%)b
  White9,732 (63.9)749 (67.3) 
  African American3,613 (23.7)165 (14.8) 
  Hispanic1,744 (11.5)194 (17.4).484
  Asian  83 (0.5)    1 (0.1) 
  American Indian  46 (0.3)    3 (0.3) 
  Native Hawaiian    7 (0.0)    1 (0.1) 
  Multi-race    0 (0.0)    0 (0.0) 
Smoking status, No. (%)c
  Smokers6,428 (41.2)414 (31.2) 
  Ex-smokers7,356 (47.1)751 (56.6).000
  Non-smokersd1,824 (11.7)162 (12.2) 
  Unknown smoking status1,584 (9.2)27 (2.0) 

  • APEX = Advancing the Patient Experience; BMI = body mass index; COPD = chronic obstructive pulmonary disease; COPD-RD = COPD Optimum Patient Care DARTNet Research Database.

  • ↵a Data missing: COPD-RD n = 16,849, APEX-COPD n = 1,338.

  • ↵b Race and ethnicity are not mutually exclusive. Data missing: COPD-RD n = 15,225, APEX-COPD n = 1,113.

  • ↵c Data missing: APEX-COPD n = 1,327.

  • ↵d An overestimate as some ex-smokers were coded incorrectly as non-smokers at 1 site.