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Table 3 Results of the Mendelian randomization sensitivity analyses using summary-level data from genetic liability to ADHD (9 SNPs) to a standard deviation change in attained educational level, household income, Townsend deprivation index, and intelligence

From: The impact and causal directions for the associations between diagnosis of ADHD, socioeconomic status, and intelligence by use of a bi-directional two-sample Mendelian randomization design

Outcome

Method

OR (95% CI)

p-value

Education

Weighted median

−0.07 (−0.1, −0.03)

<0.001

MR-Egger

0.03 (−0.15, 0.21)

0.760

MR-PRESSO (4 outliers)

−0.06 (−0.10, −0.02)

0.046

Contamination mixture

0.12 (0.19, 0.00)

<0.001

MR-Mode

−0.08 (−0.15, 0.00)

0.078

MR-Mix

−0.15 (−0.21, −0.09)

<0.001

GSMR (<10 SNPs)

NA

 

Household income

IVW-random effects

−0.09 (−0.11, −0.06)

<0.001

Weighted median

−0.09 (−0.12, −0.05)

<0.001

MR-Egger

−0.03 (−0.14, 0.07)

0.564

MR-PRESSO (0 outlier)

NA

NA

Contamination mixture

−0.09 (−0.11, −0.07)

<0.001

MR-Mode

−0.08 (−0.14, −0.02)

0.026

MR-Mix

−0.04 (−0.06, −0.02)

0.001

GSMR (<10 SNPs)

NA

 

Townsend deprivation index

Weighted median

0.06 (0.04, 0.09)

<0.001

MR-Egger

0.01 (−0.07, 0.09)

0.762

MR-PRESSO (0 outliers)

NA

NA

Contamination mixture

0.08 (0.05, 0.09)

<0.001

MR-Mode

0.07 (0.03, 0.10)

0.003

MR-Mix

0.07 (−0.02, 0.16)

0.132

GSMR (<10 SNPs)

NA

 

Intelligence

Weighted median

−0.05 (−0.10, −0.01)

0.030

MR-Egger

−0.24 (−0.49, 0.01)

0.108

MR-PRESSO (4 outliers)

−0.06 (−0.13, 0.01)

0.149

Contamination mixture

−0.11 (−0.15, −0.08)

0.020

MR-Mode

−0.10 (−0.21, 0.02)

0.130

MR-Mix

−0.14 (−0.22, −0.06)

0.001

GSMR (<10 SNPs)

NA

 
  1. NA not applicable given that the genetic instrument for the ADHD exposure included only 9 SNPs, GSMR is not a suitable method