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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: Soc Sci Med. 2010 Mar 17;71(2):324–334. doi: 10.1016/j.socscimed.2010.02.027

Table 4.

The contemporaneous cumulative specification with orthogonal endowments and omitted inputs.

Dependant variable is cognitive function PCA score
OLS models
Variables (1) (2) (3) (4) (5)
Asymptomatic Malaria and Malaria Parasitaemia
  Asymptomatic Malaria (active follow-up) −0.108
(0.072)
  Lagged Asymptomatic Malaria (active follow-up) −0.128*
(0.075)
  Monthly Geom Mean P. falciparum Parasitaemia (/1000) . −0.024**
(0.011)
  Lagged Monthly Geom Mean P. falciparum Parasitaemia (/1000) . −0.005
(0.008)
  P. falciparum Parasitaemia tresholds (active follow-up)
     500		 . . −0.176*
(0.092)
     Lagged 500 . . −0.083
(0.084)
     1000 . . . −0.224**
(0.112)
     Lagged 1000 . . . −0.153
(0.094)
     1200 . . . . −0.221*
(0.114)
     Lagged 1200 . . . . −0.149
(0.098)
Clinical Malaria control Dummies
  Clinical Malaria (between two active follow-
  ups or during active follow-up)		 −0.386***
(0.100)		 −0.392***
(0.100)		 −0.385***
(0.100)		 −0.369***
(0.100)		 −0.368***
(0.101)
  Lagged Clinical Malaria (between two
  active follow-ups or during active follow-		 −0.210**
(0.093)		 −0.170*
(0.095)		 −0.188**
(0.094)		 −0.171*
(0.094)		 −0.172*
(0.094)
Chronic Malaria and Malaria anemia control Variables
  Splenomegaly −0.000
(0.142)		 −0.008
(0.144)		 0.009
(0.140)		 0.001
(0.140)		 0.004
(0.141)
  Lagged Splenomegaly 0.135
(0.129)		 0.121
(0.131)		 0.111
(0.130)		 0.112
(0.129)		 0.113
(0.130)
  Malarial anemia
     Mild −0.114
(0.127)		 −0.175
(0.121)		 −0.147
(0.122)		 −0.148
(0.122)		 −0.158
(0.121)
     Moderate 0.021
(0.322)		 0.019
(0.317)		 0.126
(0.354)		 0.068
(0.350)		 0.063
(0.349)
  Lagged Malarial anemia
     Mild 0.020
(0.100)		 −0.060
(0.094)		 −0.026
(0.097)		 −0.016
(0.096)		 −0.025
(0.095)
     Moderate −0.697***
(0.256)		 −0.714***
(0.257)		 −0.681**
(0.270)		 −0.678**
(0.270)		 −0.675**
(0.270)
Malaria control Variables - Interviews
  Childhood Past Convulsion −0.089
(0.105)		 −0.086
(0.105)		 −0.088
(0.105)		 −0.087
(0.105)		 −0.087
(0.105)
  Probability of sleeping under mosquito net
  the night before the interview		 0.442***
(0.104)		 0.410***
(0.104)		 0.421***
(0.104)		 0.405***
(0.104)		 0.412***
(0.104)
Health control
  Haemoglobin concentration −0.063**
(0.029)		 −0.066**
(0.029)		 −0.064**
(0.029)		 −0.064**
(0.029)		 −0.065**
(0.029)
  Weight for age z-score 0.127***
(0.039)		 0.131***
(0.039)		 0.125***
(0.039)		 0.124***
(0.039)		 0.126***
(0.039)
  Height for age z-score 0.549***
(0.145)		 0.549***
(0.146)		 0.553***
(0.146)		 0.551***
(0.146)		 0.557***
(0.146)
Intercept −3.165***
(0.880)		 −3.028***
(0.887)		 −3.129***
(0.886)		 −3.066***
(0.886)		 −3.089***
(0.887)
Number of observations 1567 1567 1567 1567 1567
Number of Children 227 227 227 227 227
R squared 0.226 0.223 0.224 0.225 0.225

Notes. - Huber White standard errors are reported in parenthesis. Results are not changed when standard errors are clustered at the household level (not presented here). Reference category for Malarial anemia is no malarial anemia. Other control variables are: mother alive, father alive, age7-age17, grade, sex, religion, ethnicity, convenience property, store-of-value property, capital property, monetary income, savings, informal access to credit, age of the head of houshold, literacy of the head of household, childÕs working hours, time spent on homework, child has somebody to help him with homework. Please refer to Table A5.

***

denotes statistical significance at the 1% level.

**

denotes statistical significance at the 5% level.

*

denotes statistical significance at the 10% level.