Table 1.
Patient characteristics, tumor category, grading, margin status of Group A and B.
| Variables | Overall series, n (%) | Group A (high frequency jet ventilation), n (%) | Group B (standard intubation), n (%) | p Value | |
|---|---|---|---|---|---|
| Age | Median | 67.5 | 75.5 | 65.5 | 0.004# |
| Gender | 0.51* | ||||
| Male | 56 (90) | 12 (86) | 44 (92) | ||
| Female | 6 (10) | 2 (14) | 4 (8) | ||
| Previous treatment | 0.43* | ||||
| No | 45 (73) | 9 (64) | 36 (75) | ||
| Yes | 17 (27) | 5 (36) | 12 (25) | ||
| Site | 0.28* | ||||
| Glottis | 54 (87) | 11 (79) | 43 (90) | ||
| Supraglottis | 8 (13) | 3 (21) | 5 (10) | ||
| Tumor category | 0.34* | ||||
| Tis-T1 | 46 (74) | 9 (64) | 37 (77) | ||
| T2 | 16 (26) | 5 (36) | 11 (23) | ||
| Grading | 0.87* | ||||
| G1 | 21 (34) | 5 (36) | 16 (33) | ||
| G2–3 | 41 (66) | 9 (64) | 32 (67) | ||
| Margins | 0.10* | ||||
| Negative | 24 (39) | 8 (57) | 16 (33) | ||
| Positive/close | 38 (61) | 6 (43) | 32 (67) | ||
| Deep margins | 0.04* | ||||
| Negative | 39 (63) | 12 (86) | 27 (56) | ||
| Positive/close | 23 (37) | 2 (14) | 21 (44) | ||
| Superficial margins | 0.64* | ||||
| Negative | 32 (52) | 8 (57) | 24 (50) | ||
| Positive/close | 30 (48) | 6 (43) | 24 (50) | ||
| Posterior/inferior margins | 0.33* | ||||
| Negative | 42 (68) | 11 (79) | 31 (65) | ||
| Positive/close | 20 (32) | 3 (21) | 17 (35) | ||
*p value estimated by chi-square test.
#p value estimated by the Mann–Whitney test.