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. 2022 May 13;22:542. doi: 10.1186/s12885-022-09644-8

Table 1.

Patient characteristics at baseline

Characteristic Experimental group (N = 80) Control group (N = 80) Statistics P
Age (years) 59.70 ± 8.12 59.33 ± 9.66 t = 0.275 0.784
Sex χ2 = 0.040 0.841
 Male 64 65
 Female 16 15
Smoking history χ2 = 0.417 0.519
 Smoker 50 46
 Never smoker 30 34
Stage χ2 = 0.740 0.786
 Extensive stage 7 8
 Limited stage 73 72
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