Table 3.

Correlations between the percentages of case-found patients added to COPD registers and practice characteristics

Practice characteristics	Correlation coefficient*	P value
Non-white ethnic groups (%)	0.15	0.45
Patient list size	0.20	0.33
Baseline prevalence of diagnosed COPD	0.03	0.89
Total number of case-found patients	−0.09	0.66
Socioeconomic status	0.33	0.09

*Pearson’s correlation coefficient.

COPD, chronic obstructive pulmonary disease.