A Treatise on Hygiene and Public Health: With Special Reference to the TropicsScientific Publishing Company, 1953 - 787 sider |
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Side 685
... population . It is given by the expression Number sick in a year X 1000 mean population during the year If we are considering sickness due to a particular disease only , the sickness rate may be looked upon as a case rate of the disease ...
... population . It is given by the expression Number sick in a year X 1000 mean population during the year If we are considering sickness due to a particular disease only , the sickness rate may be looked upon as a case rate of the disease ...
Side 694
... population we include very young and old persons who contribute nothing to the increase of population . Further it depends on the proportion of women of conceptive ages . For instance even if the fertility be small with a higher ...
... population we include very young and old persons who contribute nothing to the increase of population . Further it depends on the proportion of women of conceptive ages . For instance even if the fertility be small with a higher ...
Side 698
... population is called ' Standardised Death Rate ' . It may be calculated either on a standard population or on standard rates . The first method is known as the Direct Method and the second the Indirect Method . Direct Method . Here a ...
... population is called ' Standardised Death Rate ' . It may be calculated either on a standard population or on standard rates . The first method is known as the Direct Method and the second the Indirect Method . Direct Method . Here a ...
Innhold
INTRODUCTORY | 1 |
Preventive MedicinePublic Health Administration | 20 |
CHAPTER II | 77 |
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acid amount animal areas bacilli bacteria becomes Bengal beri-beri blood body boiling carbohydrate carbon carried carriers cause cent child chlorine cholera colour contains death diet digestion diphtheria disinfection drain dust dysentery effect eggs epidemic excreta factor faeces female fever filter filtered water flea ghee give heat hygiene immunity important inches India infection infectious diseases intestinal kala-azar known large number larvae latrines leprosy less malaria material measures mental method milk mortality mosquitoes necessary night-soil nutritive occurs organic matter parasites patient period persons pipe plague poisoning pollution population prevent protein public health removed rice salts sanitary sewage sewer skin slow sand filters small-pox soil solution spirochaetes supply surface symptoms tank temperature tion treatment tropical tuberculosis typhus urine usually vaccine vegetable ventilation virus vitamin washing water-supply