Question: Attached is Table I for this question that I am resubmitting: In the discussion of the results presented in Table 1 the author's reported using

Attached is Table I for this question that I am resubmitting:

In the discussion of the results presented in Table 1 the author's reported using a paired t-test to compare the two groups of patients in this study on outcomes measured on a continuous scale.I don't see how they could have used a paired t-test here - why would I say this?

Infection(-) n =90 Male Gender (%) 67.8 infection(+) n=60 p value Age (years) 64.8+11.8 73.3 0.467 68.6+11.0 HT (cm) 160.5+9.8 0.047 160.5+8.5 BW (kg) 57.0+10.9 0.995 55.8+11.9 BMI 22.0+3.2 0.515 21.6+4.0 ASA (%) 0.491 0.006 ASA1 (%) 39.5 15.5 ASA2 (%) 55.8 74.1 ASA3 (%) 10.3 History of diabetes mellitus (%) 15.6 26.7 0.096 Total operation time (min) 325+98.2 399+ 122.5

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