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Table 1 Genome-wide association studies used in the two-sample Mendelian randomisation analyses

From: Investigating causal effects of income on health using two-sample Mendelian randomisation

Phenotype

Reference

Sample size

UK biobank overlapa

Unit of measurement

Income (log hourly wages)

[22]

282,963

282,963 (100%)

SD

Educational attainment (years)

[40]

766,345

442,183 (58%)

SD

Mental health

Depression

[41]

218,792

0

Log odds

Anxiety disorders

[41]

218,792

0

Log odds

Subjective wellbeing

[42]

298,420

40,543 (14%)

SD

Physical health

Death (all causes)

[41]

218,792

0

Log odds

Body mass index

[43]

322,154

0

SD

Health behaviours

Ever smoked

[44]

249,171

0

Log odds

Cigarettes per day

[44]

143,210

0

SD

Alcohol consumption (units per week)

[44]

226,223

0

SD

Negative control outcomes

Childhood asthma (onset age < 16)

[41]

218,792

0

Log odds

Birth weight

[45]

143,677

67,786 (47%)

SD

  1. SD standard deviation
  2. aParticipant overlap between the exposure and outcome data sets can cause bias in Mendelian randomisation analyses