Is treated HIV infection associated with knee cartilage degeneration and structural changes? A longitudinal study using data from the osteoarthritis initiative

Table 1 Subject characteristics at baseline

	All subjects (n = 30)	HIV group (n = 10)	Control group (n = 20)	P value^a
Age, mean ± SD years	52.1 ± 6.2	52.2 ± 6.9	52.0 ± 6.0	0.940
Females [n (%)]/Males [n (%)]	9 (30%) / 21 (70%)	3 (30%) / 7 (70%)	6 (30%) / 14 (70%)	1.000
BMI, mean ± SD kg/m²	27.6 ± 3.7	27.4 ± 3.6	27.7 ± 3.8	0.831
Knee Kellgren-Lawrence scores				1.000
Grade 0 [n (%)]	27 (45%)	9 (45%)	18 (45%)
Grade 1 [n (%)]	12 (20%)	4 (20%)	8 (20%)
Grade 2 [n (%)]	15 (25%)	5 (25%)	10 (25%)
Grade 3 [n (%)]	6 (10%)	2 (10%)	4 (10%)
Racial composition				1.000
White or Caucasian [n (%)]	12 (40%)	4 (40%)	8 (40%)
Black or African American [n (%)]	18 (60%)	6 (60%)	12 (60%)

Continuous data were expressed as mean ± SD. Categorical data were presented in numbers of participants with percentage in parentheses. ^a P-values were calculated using either Pearson’s χ²-test or independent t-test as appropriate

ISSN: 1471-2474