Table 1 Demographic and clinical characteristics, according to pneumonia subtype

Gender

Females

939(41.6)

3236(47.8)

7704(45.0)

<0.001

Males

1318(58.4)

3539(52.2)

9403(55.0)

<0.001

Residence

Rome

1422(63.0)

4231(62.5)

10143(59.3)

<0.001

Province of Rome

452(20.0)

1394(20.6)

3715(21.7)

<0.001

Rest of Lazio

383(17.0)

1150(17.0)

3249(19.0)

<0.001

Age

65-69

384(17.0)

724(10.7)

2152(12.6)

<0.001

70-74

486(21.5)

1052(15.5)

2894(16.9)

<0.001

75-79

561(24.8)

1428(21.1)

3791(22.2)

<0.001

80-84

398(17.6)

1591(23.5)

3810(22.3)

<0.001

85-89

287(12.7)

1170(17.3)

2629(15.4)

<0.001

90+

141(6.25)

810(11.9)

1831(10.7)

<0.001

Socioeconomic position (Rome residents only)

1 (high)

210(9.3)

687(10.1)

1483(8.7)

<0.001

2

247(10.9)

640(9.4)

1591(9.3)

<0.001

3

231(10.2)

702(10.4)

1695(9.9)

<0.001

4

239(10.6)

684(10.1)

1664(9.7)

<0.001

5 (low)

238(10.5)

655(9.7)

1815(10.6)

<0.001

Respiratory conditions

Oxygen therapy (previous year)

279(12.3)

756(11.2)

2219(13.0)

0.001

COPD (previous two years)

494(21.9)

1122(16.6)

3555(20.8)

<0.001

Respiratory failure (previous two years)

242(10.7)

453(6.7)

1620(9.5)

<0.001

Influenza Vaccination (previous two years)

1218(54.0)

3820(56.4)

6955(40.7)

<0.001

Acute stroke (same admission)

97(4.3)

573(8.5)

145(0.8)

<0.001

Comorbidities (previous two years)

Heart failure

551(24.4)

2073(30.6)

3461(20.2)

<0.001

Diabetes

415(18.4)

902(13.3)

2217(13.0)

<0.001

Chronic kidney disease

632(28.0)

1121(16.5)

2313(13.5)

<0.001

Malignant tumours

721(31.9)

1397(20.6)

2148(12.6)

<0.001

Hypertension

827(36.6)

1698(25.1)

4327(25.3)

<0.001

Ischemic heart disease

583(25.8)

1573(23.2)

3882(22.7)

0.004

Other heart disease

528(23.4)

1287(19.0)

2835(16.6)

<0.001

Arrhythmias

602(26.7)

1986(29.3)

4267(24.9)

<0.001

Cerebrovascular disorders

745(33.0)

2023(29.9)

4251(24.8)

<0.001

Digestive disease

139(6.2)

540(8.0)

997(5.8)

<0.001

Anaemias/coagulopathies

403(17.9)

883(13.0)

1972(11.5)

<0.001

Neurological diseases

356(15.8)

914(13.5)

1951(11.4)

<0.001

Psychiatric diseases

217(9.6)

631(9.3)

1714(10.0)

0.243

Chronic respiratory diseases (other than COPD)

113(5.0)

378(5.6)

970(5.7)

0.435

Severity of disease (same admission)

Ventilation

417(18.5)

207(3.1)

475(2.8)

<0.001

Intensive care

580(25.7)

367(5.4)

563(2.8)

<0.001

Type of hospital

Public

1361(60.3)

4485(66.2)

11297(66.0)

<0.001

Teaching

598(26.5)

1391(20.5)

2967(17.3)

<0.001

Private

298(13.2)

899(13.3)

2843(16.6)

<0.001

Mortality

In hospital

729(32.3)

1667(24.6)

2269(13.3)

30 day-mortality

863(38.2)

1916(28.3)

2710(15.8)

Mean

Median

Mean

Median

Mean

Median

Length of hospital stay

27.1

17.0

16.8

13.0

13.2

10.0