XII, B, 5 



Manlove: Incidence of Age 



235 



is the majority of those deaths influenced by arterial, cardiac, 

 or renal changes. 



Table II. — Percentage of slight and marked atheroma among natives of 

 India in different decades. (5) 



Age in years. 



Normal. 



Slight. 



Marked. 



Granular 



kidney in 



atheroma 



cases. 



Up to 10-. 



100 

 93.3 

 81.3 

 70.1 

 52.6 

 40.6 

 38.1 

 79.4 

 47.5 



0.0 

 6.7 

 16.2 

 24.2 

 28.0 

 24.8 

 33.3 

 13.4 

 27.4 



0.0 



0.0 



2.5 



5.7 



19.4 



34.8 



28.6 



3.2 



25.1 



0.0 



0.0 



9.8 



16.8 



16.4 



26.8 



69.2 



13.1 



,26.1 



11 to 20. - 



21 to 30 - — 



31 to 40 - . 



41 to 50 



51to60 . . _ . 



Over 60 



Upto40 



Over 40 



Total.- 



72.6 



19.4 



8.0 



18.5 



. 



Table III. — Sex and race incidence of atheroma. (5) 





Males. 



Females. 



Hindus. 



Moham- 

 medans. 



Slight atheroma.. 



21.4 



7.4 



13.0 

 9.2 



19.5 

 7.3 



19.5 

 9.75 



Marked atheroma 



Total - 



28.8 



22.2 



26.8 



29.25 



Up to 40 years - . 



22.2 

 52.0 



13.8 



57.5 



20.2 

 52.5 



21.1 . 

 50.9 



Over 40 years ... 





Rogers has stated that in India the early deaths cannot be fully 

 accounted for by the prevalence of tropical diseases. This led 

 him to make a study of the arteries, with a view to determining 

 the degree of atheromatous changes which had taken place in 

 the arteries during the different decades. He notes, as the most 

 important point brought out by the analysis, the sudden and great 

 increase of marked arterial degeneration as soon as the age of 

 40 years is passed. The sex incidence shows only a slight pre- 

 ponderance in males. However, the lesser incidence in Indian 

 females is confined to the slighter degrees of arterial degenera- 

 tion and to below the age of 41 years, both the more marked 

 degrees of atheroma and the incidence over 40 years of age being 

 actually higher in the females than in the males. The average 

 age of all females in his series is lower than that of the males, 

 17.7 per cent of the women having been over 40 years of age 

 at the time of death. This is in accordance with the greater 

 frequency of marked atheroma among the females as compared 



