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Table 1 Characteristics of individuals exposed and not exposed to ETR + PI contributing to follow-up, measured in number of persons-years

From: Impact of etravirine on hospitalization rate between 2005 and 2011 among heavily treated HIV-1-infected individuals on failing regimens

All patients (person-years)

All patients

No ETR + PI

ETR + PI

p

13,985.68

11,666.71

2318.96

Age at baseline

 18–29 years

333.96 (2.4%)

286.02 (2.5%)

47.94 (2.1%)

< 0.0001

 30–39 years

3050.51 (21.8%)

2699.57 (23.1%)

350.94 (15.1%)

 

 40–59 years

9754.3 (69.7%)

7973.02 (68.3%)

1781.28 (76.8%)

 >=60 years

846.91 (6.1%)

708.10 (6.1%)

138.81 (6.0%)

Gender and transmission group

 Men who have sex with men

5462.59 (39.1%)

4392.05 (37.6%)

1070.41 (46.2%)

< 0.0001

 Injecting drug users

2393.23 (17.1%)

2087.84 (17.9%)

305.39 (13.2%)

 

 Other men

2788.01 (19.9%)

2258.16 (19.4%)

529.94 (22.8%)

 Other women

3341.84 (23.9%)

2928.67 (25.1%)

413.17 (17.8%)

Geographic origin

 Sub-Saharan Africa

1218.56 (8.7%)

970.62 (8.3%)

247.94 (10.7%)

0.0002

 Other

12,767.12 (91.3%)

10,696.10 (91.7%)

2071.02 (89.3%)

 

HCV co-infection status

 No

11,650.70 (83.3%)

9643.24 (82.7%)

2007.47 (86.6%)

< 0.0001

 Yes

2334.96 (16.7%)

2023.47 (17.3%)

311.49 (13.4%)

 

Centre - Total follow-up of heavily treated individuals

 < 140 P-Y

2575.17 (18.4%)

2118.09 (18.2%)

457.02 (19.7%)

< 0.0001

 140–240 P-Y

3254.79 (23.3%)

2717.26 (23.3%)

537.53 (23.2%)

 

 240–400 P-Y

3895.42 (27.9%)

3354.69 (28.8%)

540.73 (23.3%)

 ≥ 400 P-Y

4260.31 (30.5%)

3476.68 (29.8%)

783.63 (33.8%)

Calendar period

 2005–2006

8760.93 (62.6%)

8517.74 (73.0%)

243.19 (10.5%)

< 0.0001

 2007–2008

3779.28 (27.0%)

2280.19 (19.5%)

1499.09 (64.6%)

 

 2009–2011

1445.46 (10.3%)

868.78 (7.4%)

576.68 (24.9%)

Nadir CD4 count (cells/mm3) at baseline

 < 50

5090.31 (36.4%)

3973.69 (34.1%)

1116.62 (48.2%)

< 0.0001

 50–100

2395.85 (17.1%)

1989.13 (17.0%)

406.72 (17.5%)

 

 100–200

3564.30 (25.5%)

3075.84 (26.4%)

488.46 (21.1%)

 ≥ 200

2935.22 (21.0%)

2628.05 (22.5%)

307.16 (13.2%)

CD4 count (cells/mm3) at baseline

 < 200

4879.74 (34.9%)

3871.50 (33.2%)

1008.24 (43.5%)

< 0.0001

 200–350

4083.24 (29.2%)

3521.03 (30.2%)

562.21 (24.2%)

 

 350–500

2537.01 (18.1%)

2173.42 (18.6%)

363.59 (15.7%)

 ≥ 500

2485.68 (17.8%)

2100.76(18.0%)

384.92 (16.6%)

VL (copies/mL) at baseline

 50–500

2824.38 (20.2%)

2301.04 (19.7%)

523.34 (22.6%)

< 0.0001

 500–5000

3255.58 (23.3%)

2763.23 (23.7%)

492.35 (21.2%)

 

 5000–30,000

2930.25 (21.0%)

2408.75 (20.6%)

521.50 (22.5%)

 30,000–100,000

2501.51 (17.9%)

2059.86 (17.7%)

441.65 (19.0%)

 > 100,000

2473.97 (17.7%)

2133.85 (18.3%)

340.12 (14.7%)

Previous AIDS defining events at baseline

 No

8274.24 (59.2%)

7116.34 (61.0%)

1157.90 (49.9%)

< 0.0001

 Yes

5711.44 (40.8%)

4550.31 (39.0%)

1161.06 (50.1%)

 

Prophylaxis (Cotrimoxazole, Dapsone, Pentamidine)

 Not eligible (CD4 > 200)

8093.10 (57.9%)

6969.47 (59.7%)

1123.63 (48.5%)

< 0.0001

 No

1821.36 (13.0%)

1378.35 (11.8%)

443.01 (19.1%)

 

 Yes

4071.22 (29.1%)

3318.89 (28.5%)

752.33 (32.4%)

Number of prior ARVs

 5–8

3749.64 (26.8%)

3609.96 (30.9%)

139.69 (6.0%)

< 0.0001

 9–10

3816.28 (27.3%)

3520.84 (30.2%)

295.44 (12.7%)

 

 11–13

4084.10 (29.2%)

3281.11 (28.1%)

802.99 (34.6%)

 > 13

2335.66 (16.7%)

1254.81 (10.8%)

1080.85 (46.6%)