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seconds. Rapid-dark adaptation test performance r+as significantly correlated to the Vitamin A dielary intake (p
there vras a complaint related to night blindness; this group was designated as the night blind group. The control group consisted of 10 pairs of siblings from families in which there were no complaints. Subjects were males and females from 3-'12 years of age. There were no ocular signs of Vitamin À deficiency in a1t groups of subjects. 74 SubjecLs were tested for defective dark adaptation using a simple dark adaptation tesL. At night, the child was exposed to a bright ftash light for one minute and was immediately put into a dark room and asked to locate an object (a bag of cookies) which was silently moved from one location to another one meter in front of the subject. The light level in the dark room was not specified. Time taken to locate the test object was recorded. The time taken to comolete the dark adaptation test by the night-blind group was 38 seconds compared to only 9 seconCs in the non-nightblind group. Blood samples were collected from each subject. Half of the night blind group and half of the control group were given Vitamin À supplement (100,000 IU in the form of retinylpalmitate) and the rest were given a placebo. Eighteen days after lhe Vitanrin A supplement or placebo, blood samples vrere again collected and the dark adaptation test was repeated. Àfter 18 days all of (100%) the Vitamin À supplemented night blind subjects had dark adaptation times less than '15 seconds. On).y 50% of the night blind subjects had dark adaptation times less lhan 15 seconds before Vitamin A supplementation. Thirty percent of the placebo group had dark adaplation times of less lhan 15 seconds. À11 of the children (100%) in the control group, who were given Vitamin À supplement had dark adaptation times less than'15 seconds. Mean plasma Vitamin A levels of the Vitamin A supp)-emented night blind group increased signifi-
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NUTRTTiON SURVEY METHODS: EXPERiENC
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NUTRITION SURVEY I{ETHODS: EXPERIEN
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standardize a 1O-Second Dark Àdapt
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Finally, I wish to thank my wife, s
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.Vítamin A deficiency, a prevalent
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¿. RESUTTS 30 Data Cleaning 30 Des
Page 13 and 14:
LIST OF TÀBIES Table paqe 1. ¿. 3
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tIST OF FIGURES Fiqure '1. Relation
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Chapter 1 INTRODUCTION Malnutrition
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Chapter 2 REVIEI^¡ OF THE TITERÀT
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growth. Measurable growth retardati
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LAND\ \ ÀGRI CULTURÀL PRODUCTION
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minimum salaries (indicator of low
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Possession of livestock (mirk anirn
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the 3rd percentile at about 7 to I
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Chavez and Ramirez (1963) also stat
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Chapter 3 MATERIÀtS ÀND METHODS 3
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20 3 " 1 ,3 Food Production The siz
Page 37 and 38: 22 (a) egricultural Variables (rood
Page 39 and 40: 24 (E) uealth Variables (HeaIth Sta
Page 41 and 42: 26 3,2 METHODS 3.2.1 Data collecLio
Page 43 and 44: dependent variables. À significanc
Page 45 and 46: Chapter 4 RESULTS 4.1 DATÀ CTEANIN
Page 47 and 48: 32 TÀBtE '1 Age and sex distributi
Page 49 and 50: 34 TABLE 5 Size of land cultivated
Page 51 and 52: 36 TÀBLE 9 Classification of child
Page 53 and 54: 38 4.3 ÀSSOCIATTON OF SOCIO-ECONOM
Page 55 and 56: 40 TABTE 1 2 Effect of socio-econom
Page 57 and 58: 42 important (in the current survey
Page 59 and 60: 44 TABLE 1 5 Effects of child-feedi
Page 61 and 62: 46 TÀBIE 1 7 Age, health and socio
Page 63 and 64: Chapter 5 ÐI SCUSSI ON More childr
Page 65 and 66: Whether or not the child rvas recei
Page 67 and 68: (r=-0.42; p
Page 69 and 70: Chapter 6 CONCLUSION in this study,
Page 71 and 72: crops had significant effects on an
Page 73 and 74: Chapter 7 iNTRODUCTION Vitamin A de
Page 75 and 76: Chapter I REVIEW OF LITERATURE 8.1
Page 77 and 78: During dark adaptation, a large amo
Page 79 and 80: Classical Dark Àdaptation Test has
Page 81 and 82: 66 centrate on the test light as th
Page 83 and 84: test light. 68 The stimulus consist
Page 85 and 86: 70 TÀBIE 1 9 Comparison of scores
Page 87: (1977 ). nner using poker chips, ex
Page 91 and 92: Chapter 9 MÀTERIAtS ÀND METHODS 9
Page 93 and 94: 10-Second Test were used. in experi
Page 95 and 96: were identified. Errors were reflec
Page 97 and 98: 9.3.3 Experirnent iII 82 Five child
Page 99 and 100: Chapter '10 RESUTTS AND DISCUSSION
Page 101 and 102: 86 Test times of adult subjects Tes
Page 103 and 104: 88 Sources of variability in TÀBIE
Page 105 and 106: (p.0.0001 ), indicating that trial
Page 107 and 108: 92 l1 t6 t5 ^lq v¡ êt3 o H¡Z vt
Page 109 and 110: Decision Procedure, indicating that
Page 111 and 112: 96 10. 3 EXPERIMENT Iii : APPLICÀT
Page 113 and 114: 98 Sources of variabiJ.ity in (1971
Page 115 and 116: For the 7-10 year old group, the me
Page 117 and 118: slight modification was made on the
Page 119 and 120: Chapter '11 CONCTUSiON This study s
Page 121 and 122: In conclusion, Thornton's (1977 ) n
Page 123 and 124: Hakim, P., and Solimano, G., 1978,
Page 125 and 126: Simko, M.0., Cowe11, C. and Gilbrid
Page 127 and 128: PART II - BIBTIOGRÀPHY Brown, G. C
Page 129 and 130: Sommer,4., Katz, J., and Tarwotjo,
Page 131 and 132: QUESTi ONNAI RE Appendix B REPRESEN
Page 133 and 134: 118 ( ) 4. Divorced 18" Mother read
Page 135 and 136: 120 ( ) 4. For poultry purposes ( )
Page 137 and 138: 122 No. of all-owed repl i es : 1 .
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124 ( ) 2. No ( ) 3. Not applicable
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126 86. I^Ihy don't question ) you
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128 108. I,ihat are the foods that
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130 126 " Eco-zones No. of alLowed
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132 I " He i gtrt of chi Id Cen t i
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134 27. What are pregnant ? Months
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Appendix D LiST AND CODES OF STUDY
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Àppendix E LETTER OF PERMiSSION T0
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Appendix F LETTER OF REQUEST Univer
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My telephone number is: 142 Phone 4
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