Length of stay of COPD hospital admissions between 2006 and 2010: a retrospective longitudinal study

Figures & data

Table 1 Comparison of eligible patients (22,462) and ineligible patients (3,545), 2006–2010

Patient characteristic	Mean (SD)	Difference between means (± 95% CI)
Patient age (years)
Eligible	72.8 (11.1)	0.1 (−0.23 to 0.55)
Ineligible	72.7 (10.2)
Males (%)
Eligible	51.7 (0.5)	0.9 (−0.01 to 0.03)
Ineligible	52.6 (0.5)
Deprivation score (IMD)
Eligible	28.0 (13.2)	2.0 (1.58 to 2.52)
Ineligible	30.0 (13.2)

Abbreviations: CI, confidence interval; IMD, Index of Multiple Deprivation; SD, standard deviation.

Figure 1 Mean LOS (±95% CI) of all COPD admissions (2006–2010) among patients aged ≥45 years and mean LOS (±95% CI) of patients aged ≥45 years admitted for the first time in at least 12 months (2006–2010).

Note: *Period for each year ran from April 1 to March 31.
Abbreviations: CI, confidence interval; LOS, length of stay.

Figure 2 Mean LOS per COPD admission (±95% CI) among study patients not admitted for COPD during the preceding 12 months, plotted against mean time in days to that admission from their first admission in 2006–2007.

Abbreviations: CI, confidence interval; LOS, length of stay.

Figure 3 LOS (box and whisker plot of median, interquartile ranges, and outliers) of all COPD admissions (2006–2010) of patients registered with London general practices not having had a COPD admission in the 12 months prior to their first admission after April 1, 2006 to English hospitals reporting at least 100 such admissions.

Abbreviation: LOS, length of stay.

Figure 4 Mean LOS (±95% CI) of all COPD admissions (36,893) to included English hospitals between 2006–2010, and adjusted for clustering, age, sex, and geographical deprivation score of patients.

Abbreviations: CI, confidence interval; LOS, length of stay.

Figure 5 Mean LOS (±95% CI) of COPD admissions ≤10 days (29,255) to included English hospitals between 2006–2010, shown in ascending order and adjusted for clustering, age, sex, and geographical deprivation score of patients.

Abbreviations: CI, confidence interval; LOS, length of stay.

Figure 6 Mean LOS (±95% CI) of COPD admissions ≤10 days (27,813) to included English hospitals between 2006–2010, and adjusted for clustering, age, sex, and geographical deprivation score of patients.

Note: Deaths excluded.
Abbreviations: CI, confidence interval; LOS, length of stay.