Table 2 Crude and adjusted predictors of missing a medical or ARV visit in the first six months on ART in Johannesburg, South Africa (n = 4476)

Sex

Female

Reference

Reference

Reference

Reference

Male

1.15 (1.05-1.27)

1.16 (1.05-1.28)

1.14 (1.03-1.28)

1.15 (1.02-1.28)

Baseline BMI

≥17.5

Reference

Reference

Reference

Reference

< 17.5

1.11 (1.00-1.24)

1.09 (0.97-1.22)

1.24 (1.09-1.40)

1.22 (1.08-1.39)

Age at ART initiation

≥ 50

Reference

Reference

Reference

Reference

40-49.9

1.11 (0.92-1.35)

1.15 (0.94-1.40)

1.00 (0.80-1.25)

1.00 (0.80-1.26)

30-39.9

1.04 (0.87-1.25)

1.07 (0.89-1.30)

1.08 (0.88-1.33)

1.08 (0.87-1.33)

25-29.9

1.07 (0.87-1.32)

1.10 (0.89-1.37)

1.01 (0.80-1.29)

1.03 (0.81-1.32)

18-24.9

1.10 (0.83-1.45)

1.13 (0.86-1.51)

1.22 (0.91-1.65)

1.23 (0.90-1.67)

Baseline CD4 count

(cells/mm³)

100-200

Reference

Reference

Reference

Reference

51-100

0.89 (0.78-1.01)

0.88 (0.77-1.00)

0.93 (0.81-1.08)

0.95 (0.83-1.07)

0-50 vs.

1.00 (0.90-1.12)

0.98 (0.88-1.09)

0.99 (0.88-1.12)

0.93 (0.80-1.07)

Baseline Hb (ug/dL)

≥ 10.0

Reference

Reference

Reference

Reference

< 10.0

1.01 (0.91-1.13)

1.02 (0.92-1.14)

1.00 (0.89-1.14)

1.00 (0.88-1.13)

Baseline WHO stage

I/II

Reference

Reference

Reference

Reference

III/IV

1.04 (0.94-1.14)

1.03 (0.93-1.14)

1.06 (0.95-1.19)

1.03 (0.92-1.16)

Baseline NRTI

d4T

Reference

Reference

Reference

Reference

AZT

1.13 (0.86-1.48)

1.10 (0.84-1.44)

0.99 (0.71-1.39)

0.98 (0.70-1.38)

Baseline NNRTI

EFV

Reference

Reference

Reference

Reference

NVP

1.13 (0.96-1.33)

1.18 (1.00-1.40)

1.04 (0.85-1.26)

1.05 (0.86-1.29)