Table 4 Factors associated with time to LTFU for patients on ART in central Kenya between 2004 and 2012 after 36 months of follow up

Age groups

 0–4

Ref

Ref

 5–9

0.82 (0.70–0.95)

0.76 (0.59–0.98)

 10–14

0.86 (0.72–1.03)

0.78 (0.59–1.04)

 15–19

1.18 (0.97–1.43)

1.08 (0.81–1.44)

 20–35

1.22 (1.10–1.36)

1.26 (1.03–1.55)

 36–50

0.90 (0.81–1.01)

0.91 (0.74–1.12)

 51 and above

0.86 (0.76–0.98)

0.85 (0.68–1.06)

Sex

 Female

Ref

Ref

 Male

1.03 (0.98–1.08)

1.07 (1.01–1.14)

Marital status

 Single

1.19 (1.12–1.26)

1.18 (1.09–1.27)

 Married

Ref

Ref

 Divorced

1.30 (1.21–1.38)

1.26 (1.17–1.36)

 Widowed

0.93 (0.86–1.02)

1.04 (0.94–1.14)

Regimen started

 TDF based

Ref

Ref

 D4T based

0.61 (0.45–0.82)

1.87 (1.70–2.06)

 AZT based

0.48 (0.35–0.65)

1.29 (1.19–1.41)

 ABC based

0.78 (0.45–1.36)

1.55 (1.29–1.86)

Baseline WHO stage

 Stage 1

Ref

Ref

 Stage 2

1.05 (0.98–1.12)

1.12 (1.03–1.21)

 Stage 3

1.20 (1.12–1.28)

1.21 (1.12–1.32)

 Stage 4

1.50 (1.36–1.66)

1.51 (1.32–1.71)

TB status

 ON TB TX

Ref

Ref

 No signs

1.88 (1.50–2.36)

1.93 (1.50–2.49)

 Presumptive TB

4.59 (4.17–5.05)

4.08 (3.64–4.57)

ART cohort

 2004

Ref

 2005

0.73 (0.58–0.93)

0.78 (0.55–1.12)

 2006

0.71 (0.57–0.88)

0.99 (0.72–1.36)

 2007

1.02 (0.83–1.26)

1.47 (1.08–2.00)

 2008

0.89 (0.72–1.10)

1.46 (1.07–2.00)

 2009

0.81 (0.66–1.00)

1.53 (1.12–2.08)

 2010

0.87 (0.71–1.07)

1.94 (1.42–2.65)

 2011

0.90 (0.73–1.11)

2.45 (1.79–3.37)

 2012

1.21 (0.99–1.49)

3.47 (2.52–4.76)