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It_PPH1 is_VBZ very_RG difficult_JJ to_TO form_VVI an_AT1 accurate_JJ assessment_NN1 of_IO health_NN1 gains_NN2 in_II developing_JJ countries_NN2 from_II 1960-1990_MCMC ,_, or_CC any_DD other_JJ period_NN1 ,_, for_IF that_DD1 matter_NN1 ._. 
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First_MD ,_, developing_VVG countries_NN2 have_VH0 not_XX all_RR experienced_VVN the_AT same_DA gains_NN2 ._. 
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While_CS some_DD have_VH0 experienced_VVN tremendous_JJ progress_NN1 ,_, others_NN2 have_VH0 experienced_VVN no_AT gains_NN2 or_CC even_RR decline_VV0 ._. 
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Second_MD ,_, statistics_NN in_II developing_JJ countries_NN2 tend_VV0 to_TO be_VBI suspect_NN1 ._. 
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Sometimes_RT ,_, statisticians_NN2 exaggerate_VV0 health_NN1 gains_NN2 to_TO appease_VVI local_JJ officials_NN2 ._. 
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In_II other_JJ cases_NN2 ,_, federal_JJ governments_NN2 may_VM exaggerate_VVI health_NN1 problems_NN2 in_II hope_NN1 of_IO attracting_VVG more_DAR aid_NN1 from_II international_JJ relief_NN1 agencies_NN2 such_II21 as_II22 the_AT World_NN1 Bank_NN1 ._. 
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Be_VB0 that_DD1 as_CSA it_PPH1 may_VM ,_, health_NN1 in_II developing_JJ countries_NN2 is_VBZ often_RR measured_VVN in_II31 terms_II32 of_II33 life_NN1 expectancy_NN1 ,_, infant_NN1 mortality_NN1 ,_, and_CC access_NN1 to_II medical_JJ care_NN1 ._. 
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From_II 1960-1990_MCMC ,_, life_NN1 expectancy_NN1 and_CC medical_JJ care_NN1 access_NN1 increased_VVN for_IF most_DAT developing_JJ countries_NN2 ,_, while_CS infant_NN1 mortality_NN1 generally_RR declined_VVN ._. 
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This_DD1 ,_, however_RR ,_, is_VBZ a_AT1 broad_JJ statement_NN1 with_IW many_DA2 exceptions_NN2 ._. 
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In_II31 addition_II32 to_II33 differing_JJ experiences_NN2 and_CC bad_JJ statistics_NN ,_, health_NN1 gains_NN2 do_VD0 not_XX always_RR correspond_VVI to_II linear_JJ increases_NN2 or_CC decreases_VVZ ._. 
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For_IF examplein_NN1 times_NNT2 of_IO war_NN1 ,_, famine_NN1 ,_, or_CC political_JJ turmoil_NN1 ,_, health_NN1 standards_NN2 will_VM decrease_VVI ._. 
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They_PPHS2 may_VM rapidly_RR increase_VVI in_II the_AT aftermath_NN1 of_IO such_DA traumatic_JJ events_NN2 ,_, or_CC stagnate_VV0 at_II low_JJ levels_NN2 ._. 
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This_DD1 makes_VVZ calculation_NN1 more_RGR difficult_JJ still_RR ._. 
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While_CS many_DA2 health_NN1 gains_NN2 can_VM be_VBI reported_VVN ,_, the_AT question_NN1 is_VBZ yet_RR unanswered_JJ ._. 
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Hopefully_RR ,_, optimistic_JJ projections_NN2 are_VBR correct_JJ and_CC the_AT world_NN1 will_VM continue_VVI to_TO improve_VVI its_APPGE people_NN 's_GE health_NN1 ._. 
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