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Table 2 Distribution of continuous potential confounders by exposure status in the unweighted and weighted study samples

From: An application of propensity score weighting to quantify the causal effect of rectal sexually transmitted infections on incident HIV among men who have sex with men

 

Unweighted

Weighted

Variable (Exposure group)

Mean (95% CI)

Median (IQR)

Range

Standardized bias

Mean (95% CI)

Median (IQR)

Range

Standardized bias

Age (No STI)

29.6 (29.0, 30.2)

28.1 (24.4, 33.9)

18.2-71.6

−0.45

29.2 (28.6, 29.8)

27.5 (24.0, 32.9)

18.2-71.6

0.04

Age (STI)

26.7 (25.3, 28.1)

25.0 (22.1, 28.5)

19.1-51.4

 

29.5 (27.9, 31.1)

27.6 (24.5, 33.9)

19.1-51.4

 

Poverty (No STI)

18.4 (17.2, 19.6)

13.8 (8.8, 25.9)

0.5-73.9

0.15

18.6 (17.4, 19.9)

13.9 (8.8, 26.3)

0.5-73.9

−0.04

Poverty (STI)

20.4 (17.3, 23.4)

18.2 (9.9, 29.7)

1.5-73.9

 

18.1 (15.2, 20.9)

14.5 (8.5, 26.6)

1.5-73.9

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