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Table 1 Frequency of definitions for predisposition utilised within the included papers

From: Current epidemiological evidence for predisposition to high or low intensity human helminth infection: a systematic review

Definition of predisposition

No. of papersa

Consistently infected at multiple time points

11

Consistent high intensity infections at multiple time points

9

Pre-treatment infection status as predictor for future infection

6

Pre-treatment intensity of infection amongst those infected post-treatment

4

Clustering of high-intensity infections within households

3

Consistent high intensity infections amongst family members

2

Consistently infected at same intensity level across multiple time points

2

Association between pre-treatment and post-treatment worm burdens

1

Clustering of infections within households

1

Consistently high intensity infections within families at multiple time points

1

Correlation between pre-treatment infection/intensity and reinfection intensity

1

Familial aggregation of re-infection

1

Individual predisposition

1

Ratio of proportion predicted to be infected and observed proportion

1

Trend in reinfection with increasing pre-treatment intensity

1

Whether those heavily infected at baseline were more likely to be infected at follow-up

1

  1. aTotal may exceed 43 due to some papers using multiple definitions