Table 2.

Bivariate analysis of the general and clinical factors associated with mortality among Amazonian indigenous Peruvians

Characteristic	Survived, N = 18 652	Deceased, N = 366	OR	95% CI	P *
Sex
Female	10 728 (98%)	169 (1.6%)	1.00
Male	7924 (98%)	197 (2.4%)	1.58	1.28–1.94	<0.001
Age, median (IQR)	34 (22, 48)	46 (31, 65)	1.04	1.03–1.04	<0.001
Age group
0–5	793 (99%)	10 (1.2%)	1.00
6–11	1007 (99%)	8 (0.8%)	0.63	0.25–1.60	0.332
12–17	1351 (100%)	5 (0.4%)	0.29	0.10–0.86	0.026
18–29	4290 (99%)	60 (1.4%)	1.11	0.57–2.18	0.763
30–59	9145 (98%)	163 (1.8%)	1.41	0.74–2.69	0.291
>59	2066 (95%)	120 (5.5%)	4.61	2.40–8.83	<0.001
Number of symptoms
0–2	5463 (99%)	80 (1.4%)	1.00
3–4	7395 (98%)	137 (1.8%)	1.27	0.96–1.67	0.097
>4	5794 (97%)	149 (2.5%)	1.76	1.33–2.31	<0.001
Respiratory distress
No	15 761 (99%)	231 (1.4%)	1.00
Yes	2891 (96%)	135 (4.5%)	3.19	2.57–3.95	<0.001
General malaise
No	9041 (98%)	155 (1.7%)	1.00
Yes	9611 (98%)	211 (2.1%)	1.28	1.04–1.58	0.021
Cough
No	7292 (99%)	109 (1.5%)	1.00
Yes	11 360 (98%)	257 (2.2%)	1.51	1.21–1.90	<0.001
Headache
No	6314 (98%)	149 (2.3%)	1.00
Yes	12 338 (98%)	217 (1.7%)	0.75	0.60–0.92	0.006
Irritability
No	18 212 (98%)	350 (1.9%)	1.00
Yes	440 (96%)	16 (3.5%)	1.89	1.14–3.15	0.014
Convulsion
No	18 649 (98%)	364 (1.9%)	1.00
Yes	3 (60%)	2 (40%)	34.16	5.69–205.02	<0.001
Coma
No	18 603 (98%)	363 (1.9%)	1.00
Yes	1 (25%)	3 (75%)	153.7	15.95–1481.55	<0.001
Abnormal auscultation
No	18 500 (98%)	358 (1.9%)	1.00
Yes	152 (95%)	8 (5.0%)	2.72	1.33–5.58	0.006
Abnormal pulmonary radiography
No	18 649 (98%)	365 (1.9%)	1.00
Yes	3 (75%)	1 (25%)	17.03	1.77–164.12	0.014

^* P-value calculated with Chi-square test for categorical variables and Student’s t-test for numerical variables