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The analysis of causes of death in different localities is carried a step farther in the table below, which gives corresponding figures for the eight minor geographic divisions:
Study of this and the preceding table brings out notable points about causes of death in the eight minor geographic divisions, as follows:
In comparison with the average proportions for the State as a whole, the proportions for the coast counties of Northern California are particularly high in the case of diseases of the nervous system and deaths from old age, the proportions per 1,000 total deaths being respectively 170.8 and 75.0 for this group of counties against general averages of 104.8 and 26.4 for the State. It should be remembered, however, that many of the deaths reported for this geographic division occurred at the Mendocino and Napa State Hospitals. In this division the proportion of all deaths caused by epidemic diseases is also considerable, being 72.9 against 56.0 for California as a whole.
For the interior counties of Northern California the proportions are particularly high for epidemic diseases (the proportion per 1,000 deaths being 109.6 as compared with 56.0 for the State), for diseases of the respiratory system (119.1 for this division against an average proportion of 99.2 for all California), and for violence (123.1 for this division against 102.5 for the entire State).
San Francisco exceeds the State especially in the proportion of all deaths caused by diseases of the circulatory system (158.0 against 126.4) and of the respiratory system (117.2 against 99.2 per 1,000 deaths).
In the other bay counties (Alameda, Contra Costa, Marin, and San Mateo) the proportions are above the general average particularly for diseases of the nervous system (122.8 against 104.8), of the digestive system (113.8 against 98.5), and also of the circulatory system (136.9 against 126.4).
The coast counties of Central California, from Santa Clara and Santa Cruz to San Luis Obispo inclusive, surpass the State especially in the proportions of all deaths caused by epidemic diseases (72.1 in contrast with 56.0) and by diseases of the nervous system (142.3 in contrast with 104.8 for the State).
The interior counties of Central California from Yolo, Sacramento, and El Dorado to and including Kern, also show a considerable proportion for epidemic diseases, 71.7 per 1,000 deaths from all causes, and exceed besides in deaths by violence, the proportion for this division being 128.7 against 102.5 for the State as a whole:
Los Angeles County surpasses the State particularly in the proportion for other than epidemic general diseases, the class which includes tuberculosis, the proportion per 1,000 total deaths being 317.5 for this county against 246.0 for California as a whole. The proportion for diseases of the genito-urinary system in Los Angeles, 75.0, is also somewhat above the average of 63.7 for the entire State.
In the remaining six counties of Southern California, also, the proportion for other than epidemic diseases is relatively high, 247.7 per 1,000 total deaths, as is besides the proportion for violence (158.0 against 102.5 for the State). However, one third (65 of 192) of the deaths from violence in this geographic division resulted from the explosion on the U. S. S.“ Bennington” in San Diego harbor.
Tuberculosis. The following table shows the number and per cent of total deaths caused by tuberculosis in each main and minor geographic division:
In the State there were 1,813 deaths from tuberculosis, or 14.8 per cent of the total 12,236 reported. The per cent of all deaths due to tuberculosis is highest, 21.4, for Los Angeles; next 17.0, for the other six counties of Southern California; and next, 15.0, for San Francisco. The per cent is below the average for the State in both divisions of Northern California and in the three divisions of Central California outside the metropolis. The per cent was 19.7 for the seven counties of Southern California against only 13.2 for Northern and Central California.
It should be noted, however, that deaths of newly arrived consumptives are much more numerous in Southern California than in the rest of the State. This appears clearly from the following table showing the length of residence in California of those who died of tuberculosis in the last six months of 1905:
The table shows that 25.8 per cent of those who died of tuberculosis in Southern California had lived in the State less than a year, the per cent being 26.2 for Los Angeles and 25.1 for the other six counties. The corresponding figure for Northern and Central California together is only 4.3, and that for the entire State is 11.6 per cent.
In fact, many of the tuberculosis victims in Southern California had been in the State only a few months. The length of residence in months of those who died of tuberculosis in Los Angeles and the other counties of Southern California after having been in the State less than a year is shown in the table which follows:
This table shows that of all who died of tuberculosis in Southern California 4.1 per cent had been in the State less than a month, altogether 12.7 per cent less than 3 months, and altogether 17.3 per cent less than 6 months. In Los Angeles 16.8 per cent, and in the other counties 18.3 per cent, of the total victims of tuberculosis had lived in California less than half a year.
Moreover, while in the entire State 31.6, and in Northern and Central California together only 19.2 per .cent, of all tuberculosis victims had lived here less than 10 years, in Southern California 55.7 per cent had lived in the State this length of time, the corresponding per cent being 58.3 for Los Angeles, and 50.7 for the other six counties.
Native Californians form a considerable proportion of all tuberculosis victims in Northern and Central California. The per cent of native Californians among all tuberculosis victims is 37.7 for Northern California and 35.5 for Central California, or 35.7 for both divisions together, against 28.2 for the entire State and only 13.4 for Southern California. Similarly, deaths of old-time residents from tuberculosis are relatively more numerous in Northern and Central California than south of Tehachapi. Thus, the per cent of all tuberculosis victims who had lived here at least 10 years is 35.7 for Central California, 34.1 for Northern California, and 35.5 for both divisions together, in contrast with 30.0 for the State as a whole, and only 19.5 for Southern California.
VITAL STATISTICS FOR JANUARY, 1906. Summary.—The vital statistics reported for January, 1906, are as follows: Living births, 1,902; deaths, exclusive of stillbirths, 2,670; and marriages, 1,532, or 3,064 persons married. The population of the State, except Humboldt County, for which no returns have yet been received, is 1,853,561 in 1906, as estimated by the Census Bureau method with certain modifications heretofore explained. On the basis of this population, the vital statistics reported for January give the following annual rates: Living births, 12.3; deaths, 17.4; and marriages, 9.9, or 19.8 persons married, per 1,000 population.
Tuberculosis, as ever, was the principal cause of death, with pneumonia leading heart disease for second place, as usual in the winter months.
Causes of Death. The following table gives the number of deaths, by principal classes, reported for California in January. For convenience in comparison, the proportion from each class per 1,000 deaths from all, causes is likewise shown:
Other general diseases.
Number. Proportion. 2,670 1,000.0 773
58.4 617 231.1 255
135.6 468 175.3 188
The proportions are highest for other than epidemic general diseases, 231.1, diseases of the respiratory system, 175.3, and diseases of the circulatory system, 135.6, per 1,000 total deaths. The specific causes of death most prominent in these leading classes are respectively tuberculosis, pneumonia, and heart disease.