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Table 4 Linear regression for factors associated with quality of life (AQLQ-overall total score)

From: Effect of illness perceptions on asthma control and quality of life amongst adult outpatients with asthma in China

 

Univariate regression

Multiple regression

 

Coefficient

95% CI

p-value

Coefficient

95% CI

p-value

Age

− 0.142

− 0.018, − 0.001

0.038

   

Duration of ICS use

− 0.123

− 0.052, 0.002

0.073

   

FEV1% predicted

0.242

0.003, 0.016

0.003

   

BIP-1 Consequences

− 0.485

− 0.208, − 0.126

0.000

− 0.197

− 0.120, − 0.018

0.008

BIP-2 Timeline

0.027

− 0.033, 0.049

0.695

   

BIP-3 Personal control

0.358

0.098, 0.204

0.000

0.333

0.083, 0.187

0.000

BIP-4 Treatment control

0.100

− 0.015, 0.103

0.145

   

BIP-5 Identity

− 0.316

− 0.158, − 0.067

0.000

   

BIP-6 Concerns

− 0.198

− 0.150, − 0.030

0.004

   

BIP-7 Comprehension

0.092

− 0.015, 0.081

0.181

   

BIP-8 Emotional response

− 0.425

− 0.170, − 0.094

0.000

− 0.294

− 0.139, − 0.051

0.000

Medication adherence

0.273

0.128, 0.360

0.000

0.250

0.107, 0.327

0.000

  1. AQLQ Asthma quality of life questionnaire; BIP Brief illness perception; ICS Inhaled corticosteroid; FEV1 Forced expiratory volume in 1 s; CI Confidence interval