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The Himalaya by the Numbers: A Statistical Analysis - Himalayan ...

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30<br />

25<br />

20<br />

15<br />

10<br />

5<br />

0<br />

1.29<br />

0.09<br />

0.41<br />

158 Appendix B<br />

1.74<br />

1.12<br />

AMAD (3/725) All 6000ers<br />

(20/1784)<br />

Deadliest 6000m Peaks for Hired (1950-2006)<br />

(Adjusted Wald 95% Confidence Intervals)<br />

Chart D-7: Hired death rates for selected 6000m peaks<br />

with 10+ hired above base camp from 1950-2006<br />

Hired<br />

Above BC<br />

17.85<br />

3.23<br />

Death<br />

Count<br />

Survival<br />

Count<br />

Death<br />

Rate<br />

95% Confidence<br />

Interval<br />

Yates'<br />

Chi Square<br />

Lower Upper p-value<br />

Ama Dablam 725 3 722 0.41 0.09 1.29 0.034<br />

All 6000ers 1784 20 1764 1.12 0.72 1.74<br />

16.49<br />

0.72 0.53<br />

Kantega 31 1 30 3.23 0.00 17.85 0.793<br />

Leonpo Gang 43 2 41 4.65 0.53 16.49 0.136<br />

Cheo Himal 10 1 9 10.00 0.00 42.92 0.243<br />

Raksha Urai 10 1 9 10.00 0.00 42.92 0.243<br />

Kang Guru 68 11 57 16.18 9.17 26.94

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