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Table 2 Test of interaction of stress covariates with perceived stress (PS) by age and ethnicity, p-value and degrees of freedom

From: What stresses men? predictors of perceived stress in a population-based multi-ethnic cross sectional cohort

  

HA:

Three-Way Interactions*

Two-Way Interactions* +Main Effects with Factor

Main Effects Only with Factor

+ Two-Way Interactions*

+ Main Effects with Factor

  

Ho:

Main Effects Only with Factor

Main Effects Only with Factor

Main Effects Only without Factor

Category

Factor

Levels

   

Confounders

Overall Health

Excellent, Good, Fair/Poor

--

--

p<0.0001, df=2

 

Education in years

< 12, 12, > 12

--

--

p<0.0001, df=2

 

Household Proverty as% of Poverty Threshold

> = 150%, 100 = < 150%, < 100%

--

--

p<0.0001, df=2

Financial Security

Medically Uninsured (past yr)

Yes, No

p=0.0002, df=17

p<0.0001, df=11

p<0.0001, df=1

 

Missed a Meal due to Cost (past year)

Yes, No

p<0.0001, df=16

p=0.0002, df=11

p<0.0001, df=1

 

Did not Fill a Prescription due to Cost (past year)

Yes, No

p=0.343, df=17

p=0.244, df=11

p<0.0001, df=1

Health Status

Living with a Chronic Condition

Yes, No

p=0.058, df=17

p=0.023, df=11

p<0.0001, df=1

 

Ever Diagnosed with a Mental Health Condition

Yes, No

p=0.364, df=17

p=0.190, df=11

p<0.0001, df=1

 

Overnight in Hospital (past year)

Yes, No

p=0.020, df=17

p=0.052, df=11

p<0.0001, df=1

Social Factors

Subject to Physical Violence (past year)

Yes, No

p=0.503, df=16

p=0.378, df=11

p<0.0001, df=1

 

Live Alone

Yes, No

p=0.517, df=17

p=0.337, df=11

p=0.668, df=1

 

Firearms in Home

Yes, No

p=0.582, df=16

p=0.300, df=11

p=0.047, df=1

Health Behaviors

Exercise more than 3x per Week (past month)

Yes, No

p=0.130, df=17

p=0.202, df=11

p=0.905, df=1

 

Smoker

Never, Current, Former

p=0.054, df=27

p=0.130, df=16

p=0.896, df=2

  1. *Three-way interaction: factor by age by Ethnicity; Two-way interactions: factor by age, factor by Ethnicity, age by Ethnicity.
  2. Hispanic-Oldest age (65+) subgroup was dropped from the model because only “No High PS” outcome was observed.