Table 1 Descriptive statistics (median and interquartile ranges (IQR) based on person visits) of study populations stratified by years from HAART initiation.

Years from HAART initiation	⩾−1 and <0 year	⩾0 and < 1 year	⩾1 and <2 years	⩾2 and <3 years	⩾3 and <4 years	⩾4 and <5 years
Men (MACS cohort, n = 565)
Number of persons	533	528	476	436	388	354
Number of person visits	970	922	854	759	667	613
Calendar year
Median	1996.4	1997.4	1998.4	1999.4	2000.3	2001.3
IQR	1995.9−1997.3	1996.9−1998.3	1997.9−1999.2	1998.9−2000.1	1999.9−2001.0	2000.8−2001.9
Age (years)
Median	42.9	43.8	44.6	45.6	46.8	47.5
IQR	38.4−47.4	39.2−48.3	40.2−49.0	41.4−49.9	42.4−50.9	43.4−51.7
CD4 (cells/mm3)
Median	303	376	440	479	484	518
IQR	165−459	234−549	282−629	315−662	328−673	330−724
HIV RNA (copies/ml)
Median	26793	214	82	<50	<50	<50
IQR	5113−96219	<50−3115	<50−4996	<50−2504	<50−1437	<50−964
Women (WIHS cohort, n = 1173)
Number of persons	1143	1127	852	769	692	588
Number of person visits	2049	1834	1406	1260	1181	945
Calendar year
Median	1996.9	1997.9	1998.9	1999.8	2000.7	2001.6
IQR	1996.3−1998.1	1997.3−1999.2	1998.2−2000.0	1999.3−2000.6	2000.2−2001.4	2001.1−2002.2
Age (years)
Median	38.6	39.6	40.4	40.9	42.2	43.0
IQR	33.4−43.6	34.4−44.4	35.2−45.2	35.9−46.0	37.1−47.2	37.9−47.6
CD4 (cells/mm3)
Median	270	319	369	397	408	417
IQR	141−430	182−484	211−549	228−586	239−608	248−632
HIV RNA (copies/ml)
Median	16000	855	654	430	280	180
IQR	<4000−86000	<80−13000	<80−9800	<80−9900	<80−6100	<80−5700