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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Acta Trop. 2011 Nov 15;121(3):292–302. doi: 10.1016/j.actatropica.2011.11.003

TABLE 4.

UNIVARIATE ANALYSIS: EPIDEMIOLOGY OF MALARIA IN THE PERUVIAN AMAZON REGION OF LORETOa (N=9,195)

Some Malaria Episodes Several Malaria Episodes
Variables Odds Ratio 95% Cl Odds Ratio 95% Cl P Value
Age 1 (10yrs) 1.51 1.45, 1.56 1.96 1.88, 2.04 < 0.0001
Age 2 (yrs)
<5> 1.00b 1.00b < 0.0001
[5−15> 3.5 2.92, 4.20 6.96 4.96, 9.76
[15−45> 7.36 6.17, 8.78 32.49 23.46, 44.99
[45> 9.15 7.23, 11.57 73.1 51.25, 104.27
Gender < 0.0001
Female 1.00b 1.00b
Male 1.53 1.38, 1.70 1.52 1.36, 1.70
Health Establishment < 0.0001
Mazan 1.00b 1.00b
Padrecocha 4.45 3.25, 6.09 10.73 7.78, 14.79
San Jose de Lupuna 2.79 2.30, 3.37 12.86 10.65, 15.53
Santo Tomas 2.31 2.05, 2.61 5.38 4.68, 6.18
Education c < 0.0001
Technical / Superior 1.00b 1.00b
Secondary 1.56 1.16, 2.12 2.18 1.58, 3.01
Primary 1.9 1.40, 2.58 3.59 2.60, 4.97
None 1.64 1.02, 2.63 3.06 1.91, 4.93
Job d < 0.0001
Commerce / Mototaxi 1.00b 1.00b
Agriculture 4.46 2.98, 6.67 7.79 5.23, 11.60
Housewife 1.55 1.21, 2.00 1.88 1.46, 2.44
Craftsman 3.49 1.48, 8.25 6.22 2.71, 14.27
Charcoal 5.07 1.91, 13.47 18.06 7.15, 45.66
Loggers 6.99 4.38, 11.15 7.65 4.78, 12.25
Fishing 3.51 1.91, 6.43 6.8 3.79, 12.21
None 1.65 1.11, 2.45 1.78 1.19, 2.67
Urbanity Program 0.78 0.24, 2.61 2.83 1.08, 7.42
Job outside village < 0.0001
No 1.00b 1.00b
Yes 3.29 2.56, 4.22 4.72 3.69, 6.03
Travel history 1 (T1) e < 0.0001
No 1.00b 1.00b
Yes 2.54 2.05, 3.15 2.79 2.24, 3.47
Travel history 2(T2) e 0.0027
No 1.00b 1.00b
Yes 1.3 1.118, 1.50 1.15 0.98, 1.35
Travel history 3 (T3) e
No 1.00b 1.00b < 0.0001
Yes 8.13 4.26, 15.50 5.57 2.91, 10.63
Living with L/A f < 0.0001
No 1.00b 1.00b
Yes 1.238 1.114, 1.376 1.221 1.093, 1.365
a

Dependent variable is malaria episodes lifetime as: never ( 0), some (1–3) and several ( ≥ 4). Reference is never.

b

Indicates reference category

c

Education analysis was performed excluding all subjects younger than 18 years old.

d

Job analysis was performed excluding school students and under school age subjects.

e

Iquitos was considered as no travel for T1, T2 & T3. T1 & T2 referred to last month previous to study. T1 for > 10 km or out of village for at least 3 days. T2 for any distance & duration. T3 referred to month previous of at least one of the last four malaria episodes for further than 10km or for at least 3 days. For subjects with never malaria, T3 referred to lifetime.

f

Living with a person who works on Logging (L) or Agriculture (A).