Table 2

Simple correlation analysis for the scores of each domain and the total score of QLICD-COPD (V2.0) with values of clinical objective indicators in patients with chronic obstructive pulmonary disease

Clinical objective indicatornPHDPSDSODSPDTOT
TP2600.150*0.199**0.125*0.165**0.209**
ALB2600.174**
TBA194−0.176*
ALP196−0.176*−0.174*
Scr2600.122*
K260−0.133*
Na260−0.132*−0.127*
NEUT%259−0.132*−0.147*−0.161**−0.160**
LYMPH%2590.149*0.145*0.143*
MONO%2580.183**0.128*
LYMPH2590.133*
MONO2580.163**
HCT257−0.217*
PCO2 205−0.268**−0.148*
FVC1530.161*0.164*
FEV11520.217**0.163*
CRP212−0.136*−0.144*
  • The value in the table represents the correlation coefficient, − means that the clinical objective indicators are not related to the domain score,

  • *Means that the correlation is significant when the confidence level (two-sided) is 0.05.

  • **Means that the correlation is significant when the confidence level (two-sided) is 0.01.

  • ALB, albumin; ALP, alkaline phosphatase; CRP, C-reactive protein; FEV1, 1-second forced expiratory volume; FVC, forced vital capacity; HCT, hematocrit; K, serum potassium; LYMPH%, percentage of lymphocytes; LYMPH, lymphocytes; MONO, monocytes; MONO%, percentage of monocytes; Na, serum sodium; NEUT%, percentage of neutrophils; PCO2, partial pressure of carbon dioxide; PHD, physical function; PSD, psychological functions; SOD, social function; TBA, total bile acid; TP, total protein.