Age, Sex, Fertility and Mortality at Two Sites on the Middle San Juan River

Age, Sex, Fertility and Mortality at Two Sites on the Middle San Juan River

Jesse D. Fuhrman

Research Goals

• Infer population growth from:• Age-at-Death Distribution

• Mortality• Mean Age-at-Death

• Life Expectancy

• D30+/D5+

• Fertility• D5-/D45+

• Sex Ratio Imbalance

Age Categories

Broad Age Category Narrow Age Category

0-19

0-4

5-9

10-14

15-19

20-3420-24

25-29

30-34

35-4935-39

40-44

45-49

50+50-54

55-60

60+

Tommy Site

•Mortality•Mean Age-at-Death: 21.16

•Life Expectancy

•e0: 21.56 more years (Age: 21.56)

•e5: 26.45 more years (Age: 29.45)

•e20: 19.57 more years (Age: 39.57)

•D30+/D5+: 0.531

Tommy Site

Tommy Site Age-at-Death Distribution

0%

5%

10%

15%

20%

25%

30%

35%

40%

0-4 5-9 10-14 15-19 20-24 25-29 30-34 35-39 40-44 45-49 50-54 55-59 60+

Age Categories

Per

cent

age

Mine Canyon Site

•Mortality•Mean Age-at-Death: 21.16

•Life Expectancy

•e0: 29.10 more years (Age: 29.10)

•e5: 29.18 more years (Age: 34.18)

•e20: 20.70 more years (Age: 40.70)

•D30+/D5+: 0.635

Mine Canyon Site

Mine Canyon Site Age-at-Death Distribution

0%

5%

10%

15%

20%

25%

30%

35%

40%

0-4 5-9 10-14 15-19 20-24 25-29 30-34 35-39 40-44 45-49 50-54 55-59 60+

Age Categories

Per

cent

age

Life Expectancy (e0) Comparison

• Tommy Site: 21.6

• Mine Canyon Site: 29.1

• Puebloan Average: 20.5

• Puebloan Max

• Pueblo Bonito: 26.3

Fertility Comparison

• D5-/D45+

• Tommy Site: 2.3• Mine Canyon Site: 0.8

Sex Ratio Background

-from Kohler and Turner 2006

Sex Ratio Analysis

• 11th Century• SJ Region Male Percentage: 58.1%

• Central SJ Male Percentage: 28.3%

• Tommy Site Male Percentage: 28.0%

0.00%

10.00%

20.00%

30.00%

40.00%

50.00%

60.00%

70.00%

SJ Region Central SJ Subregion Tommy Site

Region

Mal

e P

erce

ntag

e

Sex Ratio Analysis

• 13th Century• Northern SJ Male Percentage: 63.9%

• Totah Male Percentage: 34.1%

• Mine Canyon Site Male Percentage: 56.3%

0.00%

10.00%

20.00%

30.00%

40.00%

50.00%

60.00%

70.00%

Northern SJ Region Totah Subregion Mine Canyon Site

Region

Mal

e P

erce

nta

ge

Conclusions

• Life Expectancy Improves

• Mortality Decreases

• Fertility Decreases

• Sex Ratio Imbalance Shifts