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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: Ann Thorac Surg. 2012 Feb;93(2):405–412. doi: 10.1016/j.athoracsur.2011.11.012

Table 3a.

Study Characteristics of a Matched Sub-Cohort of NSCLC Surgical Patients According to HIV-Infected and HIV-Unspecified Status. (N=88)

HIV-infected (n=22)
 HIV-Unspecified† (n=66)
Characteristics # % # % p value*
Marital Status 0.004
    Not Married 18 81.8 31 47.0
    Married 4 18.2 35 53.0
Median household income, dollar & IQR 28,945 24,223 - 31,971 32,458 20,465 - 52,973 0.143
Location of residence 0.262
    Outside Baltimore City 7 31.8 30 45.5
    Within Baltimore City 15 68.2 36 54.5
Smoking Status 0.330
    Never 0 0.0 6 9.1
    Former 0 0.0 12 18.2
    Current 22 100 48 72.7
Mean Pack-Years Smoked, years and ± S.D. 42.6 18.5 45.3 24.7 0.606
†

HIV-unspecified patients were matched on age, sex, race, stage, NSCLC histology, date of surgery, and surgical procedure.

*

χ2 test for homogeneity or Fisher's exact test for binary and categorical variables and nonparametric Mann-Whitney U test or Student's t-test for continuous variables.

BAC, bronchioloalveolar carcinoma; IQR, interquartile range; NSCLC, nos, non-small cell lung cancer, not otherwise specified; S.D., standard deviation.