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. Author manuscript; available in PMC: 2013 Jul 24.
Published in final edited form as: JAMA. 2010 Sep 22;304(12):1358–1364. doi: 10.1001/jama.2010.1376

Table 1.

Patient characteristics

Factor All Patients 1st Quartile 2nd Quartile 3rd Quartile 4th Quartile P-value

N(%) Mean SD N(%) Mean SD N(%) Mean SD N(%) Mean SD N(%) Mean SD
Total 183 46(25) 46(25) 45(25) 46(25)
Telomere length (T/S) (range) 183 1.23(0.53–1.93) 46 0.86(0.53–1.17) 46 1.09(0.78–1.41) 45 1.33(1.04–1.67) 46 1.64(1.26–1.93)
Age 183 35 1.5 46 37 3.3 46 34 3 45 34 2.9 46 34 3.1 0.89
Sex
Male 105(57) 3.7 29(63) 7.2 26(57) 7.4 25(56) 7.5 25(54) 7.4 0.84
Female 78(43) 3.7 17(37) 7.2 20(44) 7.4 20(44) 7.5 21(47) 7.4
Immunosuppression
Horse ATG/CsA 70(38) 3.6 16(35) 7.1 15(33) 7 23(51) 7.5 16(35) 7.1 0.24
Horse ATG/CsA/MMF 48(26) 3.3 17(37) 7.2 9(20) 5.9 11(24) 6.5 11(24) 6.4 0.26
Horse ATG/CsA/Rapa 35(19) 2.9 5(11) 4.6 11(24) 6.4 8(18) 5.8 11(24) 6.4 0.33
Rabbit ATG/CsA 30(16) 2.7 8(17) 5.7 11(24) 6.4 3(7) 3.8 8(17) 5.7 0.16
Ethnicity
White 91(50) 3.7 23(50) 7.5 24(52) 7.4 25(56) 7.5 19(41) 7.3 0.57
Black 45(25) 3.2 9(20) 5.9 12(26) 6.5 7(16) 5.5 17(37) 7.2 0.09
Hispanic 35(19) 2.9 11(24) 6.4 7(15) 5.4 8(18) 5.8 9(20) 5.9 0.34
Asian 12(7) 1.8 3(7) 3.7 3(7) 3.7 5(11) 4.7 1(2) 2.2 0.40
Blood counts (/−L)
ARC 20464 1371 24352 2820 22181 3265 20158 2474 15159 2177 0.12
ALC 1312 48 1328 121 1285 92 1322 71 1313 96 0.89
ANC 363 22 456 46 382 48 346 35 266 39 0.02
ANC < 200 67(37) 3.6 11(24) 6.4 17(37) 7.2 16(36) 7.2 23(50) 7.5 0.08
Platelet 10852 1423 9304 923 9848 886 14911 5519 9435 1157 0.67

Telomere length is depicted by the quartiles. ATG, anti-thymocyte globulin; CsA, cyclosporine; MMF, mycophenolate mofetil; Rapa, sirolimus; ARC, absolute reticulocyte count; ALC, absolute lymphocyte count; ANC, absolute neutrophil count; SD, standard deviation;. P-values were based on the F-statistics for comparing all four quartiles. Log-transformed ARC, ALC, ANC and platelet count were used for the analysis of variance models.