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Table 3 Incidence Rate Ratio (IRR) of all-cause mortality per increasing drought severity by demographic and climate region subgroup, with 95% confidence intervals (LCL, UCL), raw p-values and false discovery rate adjusted p-values, for IRRs with adjusted p values < 0.05. Abnormally wet years included in analysis

From: Drought severity and all-cause mortality rates among adults in the United States: 1968–2014

Age

Race

Sex

Region

IRR

LCL

UCL

Raw P

Adjusted P

25–34

White

Male

South

0.987

0.980

0.993

< 0.0001

0.0038

35–44

White

Male

South

0.990

0.985

0.995

0.0001

0.0049

45–54

White

Male

Central

1.011

1.004

1.018

0.0011

0.0253

45–54

White

Male

Southeast

0.990

0.984

0.996

0.0008

0.0196

55–64

White

Male

Northeast

0.991

0.987

0.996

0.0002

0.0051

55–64

White

Male

Southeast

0.992

0.988

0.996

0.0002

0.0051

65–74

White

Male

South

0.996

0.994

0.998

0.0001

0.0049

65–74

White

Female

Southwest

1.007

1.002

1.011

0.0022

0.0464

65–74

White

Female

West

0.991

0.988

0.995

< 0.0001

0.0019

65–74

Black

Male

East North Central

1.034

1.012

1.057

0.0027

0.0464

75–84

White

Male

South

0.996

0.994

0.998

< 0.0001

0.0035

75–84

White

Female

Southwest

1.005

1.002

1.009

0.0020

0.0429

75–84

White

Female

West

0.995

0.992

0.997

< 0.0001

0.0045

75–84

Black

Male

Northeast

1.015

1.008

1.022

< 0.0001

0.0042

75–84

Black

Female

Northeast

1.012

1.005

1.019

0.0006

0.0160

85+

White

Male

South

0.995

0.993

0.997

< 0.0001

0.0012

85+

Black

Female

Northeast

1.012

1.004

1.019

0.0026

0.0464