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Table 4 Multiple linear regression analyses predicting annual indirect household costs among participants falling above and below the provincial median annual income level

From: The excess costs of childhood food allergy on Canadian families: a cross-sectional study

 

Participants above the provincial median income level

Participants below the provincial median income level

Cases (n = 20)

Controls (n = 19)

Difference

95% CI of the difference

p-value

Cases (n = 15)

Controls (n = 16)

Difference

95% CI of the difference

p-value

Total annual indirect costs

$11,473.86

$14,216.84

$ − 2742.98

$ − 5840.50, $354.54

0.08

$8435.37

$9720.20

$ − 1284.82

$ − 5643.47, $3073.82

0.55

 Food costs

$10,706.87

$13,696.94

$ − 2990.07

$ − 6020.12, $39.97

0.06

$7880.69

$9567.01

$ − 1686.32

$ − 5888.96, $2516.33

0.42

 Healthcare consultation costs

$235.13

$204.12

$31.01

$ − 164.09, $226.11

0.75

$227.42

$59.58

$167.84

$68.95, $266.73

0.002

 Research costs

$364.74

$174.81

$189.94

$ − 104.39, $484.27

0.20

$217.29

$77.94

$139.34

$ − 62.63, $341.31

0.06

 Lost wages

$167.12

$140.97

$26.15

$ − 337.71, $390.01

0.88

$109.97

$15.65

$94.31

$5.53, $183.09

0.04

  1. Annual household income, number of household members, and allergic comorbidities status (i.e., presence vs. absence) are included as covariates in each of the models
  2. 95% CI 95th percent confidence interval