The mortality risk factor of community acquired pneumonia patients with chronic obstructive pulmonary disease: a retrospective cohort study

Table 2 Comparison of primary outcomes of predictive rules

Risk groups	No of patients (N = 520)			In-hospital mortality (N = 38)			60-day mortality (N = 55)
Risk groups	nCOPD-CAP	COPD-CAP	P value^a	nCOPD-CAP	COPD-CAP	P value^a	nCOPD-CAP	COPD-CAP	P value ^a
PSI	79[64.75,101.25]	95[77.128.25]	< 0.001	169.26 ± 31.52	170.37 ± 46.21	0.932	160.42 ± 32.1	164.93 ± 41.11	0.655
Mild	184(63.4)	106(46.1)	< 0.001	0(0)	1(5.3)	0.171	0(0)	1(3.4)	0.907
Moderate	77(26.6)	68(29.6)		2(10.5)	4(21)		5(19.2)	6(20.7)
Severe	29(10)	56(24.3)		17(89.5)	14(73.7)		21(90.8)	22(75.9)
CURB-65	1[1,2]	1[1,2]	< 0.001	3.47 ± 0.84	3.37 ± 1.21	0.758	3.12 ± 0.99	3.10 ± 1.08	0.966
Mild	214(73.8)	120(52.2)	< 0.001	0(0)	2(10.5)	0.2	1(3.8)	2(6.9)	0.929
Moderate	53(18.3)	78(33.9)		1(5.3)	2(10.5)		5(19.2)	6(20.7)
Severe	23(7.9)	32(13.9)		18(94.7)	15(79)		20(76.9)	21(72.4)
APACHE-II	8[6,12]	13[9.75,17]	< 0.001	28[26,32]	25[15,33]	0.253	26.62 ± 5.14	24.38 ± 8.12	0.234
Mild	182(62.8)	57(24.8)	< 0.001	0(0)	0(0)	< 0.001	0(0)	0(0)	< 0.001
Moderate	77(26.5)	134(58.2)		0(0)	6(31.6)		1(3.8)	9(31)
Severe	31(10.7)	39(17)		19(100)	13(68.4)		25(96.2)	20(69)

Data given as n(%) or mean ± SD or median [interquartile range]
P value^a (Student’s t test and Mann–Whitney U test for PSI, CURB-65 or APACHE-II; χ² test for mild, moderate and severe of PSI, CURB-65 or APACHE-II; Values in bold indicate P < 0.05)

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