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. 2021 Dec 2;16(12):e0260599. doi: 10.1371/journal.pone.0260599

Table 2. Underlying medical conditions, health care use, interventions, and outcomes of adults hospitalized with COVID-19 (N = 109), by age group and sex—Puerto Rico, March-August 2020.

Characteristic All patients,
No. (%)
(N = 109)
Age group (years) Sex
No. (%) p-value* No. (%) p-value*
18–49 50–64 ≥65 Male Female
(n = 26) (n = 36) (n = 47) (n = 56) (n = 53)
Underlying conditions
Any condition with evidence of increased risk of severe illness [9] 106 (97.2) 25 (96.2) 36 (100.0) 45 (95.7) 0.46 55 (98.2) 51 (96.2) 0.61
Median number of conditions 3.0 (2.0–5.0) 2.0 (1.0–3.0) 3.5 (2.0–5.0) 4.0 (3.0–5.0) <0.001 3.0 (1.5–5.0) 3.0 (2.0–4.0) 0.84
Conditions with strongest and most consistent evidence §
Obesity (BMI ≥30 but < 40 kg/m2) 38 (35.5) 9 (34.6) 15 (41.7) 14 (31.1) 0.60 24 (43.6) 14 (26.9) 0.11
Type 2 diabetes mellitus 33 (30.3) 1 (3.9) 11 (30.6) 21 (44.7) 0.001 20 (35.7) 13 (24.5) 0.22
Cardiovascular disease 26 (23.9) 0 (—) 8 (22.2) 18 (38.3) <0.001 15 (26.8) 11 (20.8) 0.51
Severe obesity (BMI ≥40 kg/m2) 15 (14.0) 9 (34.6) 4 (11.1) 2 (4.4) 0.002 4 (7.3) 11 (21.2) 0.052
Cancer 15 (13.8) 2 (7.7) 4 (11.1) 9 (19.2) 0.40 5 (8.9) 10 (18.9) 0.17
Chronic kidney disease 14 (12.8) 1 (3.9) 5 (13.9) 8 (17.0) 0.29 9 (16.1) 5 (9.4) 0.39
COPD 9 (8.3) 0 (—) 3 (8.3) 6 (12.8) 0.17 4 (7.1) 5 (9.4) 0.74
Conditions with mixed evidence §
Hypertension 68 (62.4) 8 (30.8) 22 (61.1) 38 (80.9) <0.001 34 (60.7) 34 (64.2) 0.84
Asthma 25 (22.9) 7 (26.9) 12 (33.3) 6 (12.8) 0.066 4 (7.1) 21 (39.6) <0.001
Use of corticosteroids or immunosuppressive medications 15 (13.8) 3 (11.5) 6 (16.7) 6 (12.8) 0.83 7 (12.5) 8 (15.1) 0.78
Conditions with limited evidence §
Overweight (BMI ≥ 25 but < 30 kg/m2) 37 (34.6) 6 (23.1) 15 (41.7) 16 (35.6) 0.30 17 (30.9) 20 (38.5) 0.42
Immune deficiencies 12 (11.0) 3 (11.5) 4 (11.1) 5 (10.6) 1.00 6 (10.7) 6 (11.3) 1.00
Other chronic lung diseases** 7 (6.4) 0 (—) 4 (11.1) 3 (6.4) 0.25 4 (7.1) 3 (5.7) 1.00
Neurologic conditions†† 5 (4.6) 0 (—) 1 (2.8) 4 (8.5) 0.30 1 (0.0) 4 (7.6) 0.20
Health care use
Median hospital duration, days 13.0 (8.0–21.0) 13.5 (10.0–21.0) 11.5 (8.0–21.5) 13.0 (7.0–21.0) 0.63 13.5 (9.0–20.5) 13.0 (7.0–21.0) 0.63
Any supplemental oxygen 96 (88.1) 22 (84.8) 32 (88.9) 42 (89.4) 0.87 51 (91.1) 45 (84.9) 0.38
Bacterial co-infection 21 (19.3) 5 (19.2) 3 (8.3) 13 (27.7) 0.086 9 (16.1) 12 (22.6) 0.47
ICU admission and interventions
Admitted to ICU 31 (28.4) 5 (19.2) 12 (33.3) 14 (29.8) 0.48 21 (37.5) 10 (18.9) 0.036
Median ICU duration, days 12.0 (6.0–22.0) 5.0 (5.0–5.0) 9.5 (5.5–14.5) 17.0 (10.0–22.0) 0.13 11.0 (6.0–16.0) 17.0 (5.0–28.0) 0.59
Invasive mechanical ventilation 20 (18.3) 1 (3.9) 8 (22.2) 11 (23.4) 0.074 12 (21.4) 8 (15.1) 0.46
Median ventilator days 12.0 (6.0–22.0) 5.0 (5.0–5.0) 9.5 (5.5–14.5) 17.0 (10.0–22.0) 0.13 11.0 (6.0–16.0) 17.0 (5.0–28.0) 0.59
Cardiopulmonary resuscitation§§ 6 (6.2) 0 (—) 2 (6.1) 4 (10.3) 0.28 4 (8.0) 2 (4.3) 0.68
Outcomes
Discharged alive 89 (81.7) 26 (100.0) 30 (83.3) 33 (70.2) 0.003 42 (75.0) 47 (88.7) 0.084
Died 20 (18.3) 0 (—) 6 (16.7) 14 (29.8) 0.003 14 (25.0) 6 (11.3) 0.084

Abbreviations: COVID-19 = coronavirus disease 2019; No. = number; BMI = body mass index; COPD = chronic obstructive pulmonary disease; ICU = intensive care unit; IQR = interquartile range; DNR = do not resuscitate.

*P values were calculated using Fisher’s exact tests for proportions and the Wilcoxon rank-sum test or the Kruskal-Wallis H test for medians.

Continuous variables are presented as median (IQR).

§Conditions are included and classified according to the information available as of March 22, 2021 [9]. Additional documented conditions with strongest evidence: solid organ transplant (two), current smoker (two). Additional documented conditions with mixed evidence: cerebrovascular disease (one). Additional documented conditions with limited evidence: liver disease (two), type 1 diabetes mellitus (one), bone marrow transplant (one), human immunodeficiency virus (HIV [one]).

Immune deficiencies included: being on immunosuppressive medication (nine), cancer with chemotherapy receipt within the previous year (six), solid organ transplant (two), bone marrow transplant (one), and HIV (one).

**Other chronic lung diseases included: obstructive sleep apnea (three), chronic bronchitis (two), pulmonary fibrosis (one), chronic hypoxemic respiratory failure (one).

††Neurologic conditions included: Alzheimer’s disease (three), multiple sclerosis (one), vascular dementia (one).

§§12 patients were excluded from the denominator due to a documented DNR order.