Research Article

Pesticides and Health in Vegetable Production in Kenya

Table 2

Descriptive statistics of variables used in empirical estimations ( = 726).

VariablesDefinitionUnit Mean or stat.
20052008

Dependent variables
 TACUTENumber of symptoms Count 1.89 (0.13)1.09 (0.03)
 TACUTENumber of symptoms Count0.38 (0.48)0.37 (0.03)
 HEALTHCOSTCost of illness US$4.15 (1.70)7.98 (1.57)1.57
 HEALTHCOSTCost of illness US$0.84 (0.35)2.72 (0.58)2.80

Farmer characteristics variables
 AGEAge of the farmer Years43.19 (0.66)46.18 (0.67)6.30
 AGESQAge of the farmer (years squared)Years2024.43 (62.80)2292.64 (66.85)65.21
 EDUCATION0 = none; 1 = preprimary; 2 = primary; 3 = secondary; 4 = college Ordinal2.45 (0.05)2.51 (0.04)1.09
 GENDERMale 1/00.70 (0.02)0.70 (0.02)0.00
 EXPERIENCEFarming experience Years18.42 (0.74)20.56 (0.07)2.38

Health-related and pesticide exposure variables
 HEALTHFarmer reported a symptom1/00.20 (0.02)0.34 (0.02)4.26
 SEVERE1 = mild; 2 = severe; 3 = very severeOrdinal1.11 (0.08)1.59 (0.36)1.22
 PWHOIabWHO Ia and WHO Ib (extremely hazardous)g8.79 (2.32)33.55 (12.79)1.92
 PWHOIIWHO category II (moderately hazardous)g129.87 (10.15)432.63 (25.20)10.97
 PWHOIIIWHO category III (slightly hazardous) g18.95 (3.39)166.12 (19.23)7.45
 PWHOUWHO category U (no hazard) g79.87 (7.47)167.79 (16.86)4.87
 PESTHATotal amount applied g/ha/season1,473.00 (201.82)2,124.87 (118.28)2.97
 NPESTPesticide products Count2.89 (0.09)3.32 (0.08)3.37
 COATWear coat/apron 1/00.49 (0.03)0.71 (0.02)6.06
 GLOVEWear gloves 1/00.26 (0.02)0.35 (0.02)2.49
 GUMBOOTWear boots1/00.26 (0.02)0.89 (0.02)17.35
 MASKWear facemask1/00.24 (0.02)0.40 (0.02)4.36
 TPPEProtective equipmentCount2.81 (0.07)4.00 (0.11)10.85

Farm management variables
 FARMSIZETotal farm size ha1.46 (0.08)1.06 (0.05)
 GLOBAL-GAPGLOBALGAP certified farmers1/00.07 (0.01)0.19 (0.02)0.15
 RECORDRecords keeping1/00.71 (0.02)0.32 (0.01)

All monetary variables for example health cost were adjusted (normalized) to US$ of 2008 to take account of inflation. US$ = 72 KSh (2005) and 75 KSh (2008).
Figures in parenthesis are standard errors.
Statistical significance at the 0.01 (), 0.05 (), and 0.1 () levels of probability. Categorical variables were analyzed using -test.
With only farmer who reported the health impairment.
Source: this study.