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Table 2 Patient baseline characteristics before and after matching

From: A retrospective propensity score-matched analysis of oncological and functional outcomes of submental island flap versus radial forearm free flap for oral cavity cancer reconstruction

Variables

Before matching

n = 133

After matching

n = 102

SMFa

n = 52 (%)

RFFb

n = 81 (%)

p-value

SMFa

n = 51 (%)

RFFb

n = 51 (%)

p-value

Age (mean ± SD (range); years)

59.6 ± 11.1

(33–84)

56.9 ± 10.9

(32–80)

0.186

59.2 ± 10.9

(33–84)

58.6 ± 10.7

(32–80)

0.791

Sex

      

- Male

- Female

32 (61.5)

20 (38.5)

52 (64.2)

29 (35.8)

0.854

32 (62.7)

19 (37.3)

30 (58.8)

21 (41.2)

0.839

Smoke

      

- Yes

- No

34 (65.4)

18 (34.6)

52 (64.2)

29 (35.8)

1.000

33 (64.7)

18 (35.3)

34 (66.7)

17 (33.3)

1.000

Alcohol

      

- Yes

- No

33 (63.5)

19 (36.5)

53 (65.4)

28 (34.6)

0.854

34 (65.4)

18 (34.6)

34 (65.4)

18 (34.6)

1.000

DM

      

- Yes

- No

7 (13.5)

45 (86.5)

9 (11.1)

72 (88.9)

0.786

7 (13.7)

44 (86.3)

7 (13.7)

44 (86.3)

1.000

COPD

      

- Yes

- No

14 (26.9)

38 (73.1)

19 (23.5)

62 (76.5)

0.684

14 (27.5)

37 (72.5)

11 (21.6)

40 (78.4)

0.646

ECOG PSb

      

− 0 or 1

− 2

41 (78.8)

11 (21.2)

69 (85.2)

12 (14.8)

0.358

40 (78.4)

11 (21.6)

42 (82.4)

9 (17.6)

0.804

Primary site location

      

- Tongue

- Floor of the mouth

- Buccal mucosa

- Alveolar ridge

- Retromolar trigone

29 (55.8)

14 (26.9)

5 (9.6)

3 (5.8)

1 (1.9)

48 (59.3)

12 (14.8)

12 (14.8)

6 (7.4)

3 (3.7)

0.513

29 (56.9)

14 (27.5)

4 (7.8)

3 (5.9)

1 (2.0)

27 (52.9)

9 (17.6)

10 (19.6)

4 (7.8)

1 (2.0)

0.394

T stage

      

- T1

- T2

- T3

- T4

1 (1.9)

13 (25)

20 (38.5)

18 (34.6)

-

15 (18.5)

31 (38.3)

35 (42.3)

0.422

1 (2.0)

13 (25.5)

20 (39.2)

17 (33.3)

-

9 (17.6)

21 (41.2)

21 (41.2)

0.582

N stage

      

- N0

- N1

- N2

- N3

22 (42.3)

12 (23.1)

16 (30.8)

2 (3.8)

18 (22.2)

12 (14.8)

41 (50.6)

10 (12.3)

0.011f

21 (41.2)

12 (23.5)

16 (31.4)

2 (3.9)

15 (29.4)

8 (15.7)

22 (43.1)

6 (11.8)

0.206

Clinically + Level I lymph node

18 (34.6)

41 (50.6)

0.077

18 (35.3)

21 (41.2)

0.684

Pathologically + Level I lymph node

13 (25)

34 (41.9)

0.048f

15 (29.4)

20 (39.2)

0.404

Pathological ENE

4 (7.7)

11 (13.6)

0.295

3 (5.9)

6 (11.8)

0.487

Neck dissection

Side

      

- Unilateral

- Bilateral

18 (34.6)

34 (65.4)

23 (28.4)

58 (71.6)

0.564

17 (33.3)

34 (66.7)

19 (37.3)

32 (62.7)

0.836

Type

      

- Selective

- Comprehensive

22 (42.3)

30 (57.7)

18 (22.4)

63 (77.8)

0.020f

21 (41.2)

30 (58.8)

15 (29.4)

36 (70.6)

0.300

Flap size (median (IQR);cm2)c

30 (24-35.8)

30 (28–42)

0.177

30 (24–36)

32 (28–42)

0.193

Operation time (mean ± SD (range);min)

196 ± 52

(80–340)

454 ± 84

(290–690)

< 0.001f

197 ± 53

(80–340)

450 ± 78

(290–595)

< 0.001f

Pathological margin

      

- Clear

- Close or Positive

20 (38.5)

32 (61.5)

27 (33.3)

54 (66.7)

0.581

20 (39.2)

31 (60.8)

18 (35.3)

33 (64.7)

0.838

Postoperative treatment

      

- No

- RT or CRTe

9 (17.3)

43 (82.7)

10 (12.3)

71 (87.7)

0.454

9 (17.6)

42 (82.4)

7 (13.7)

44 (86.3)

0.786

  1. a Submental island flap; b Radial forearm free flap; c The Kolmogorov-Smirnov normality test revealed that the data was not normally distributed (p-value < 0.05).; d Eastern Cooperative Oncology Group Performance Status; e Radiotherapy or Chemoradiotherapy; f Statistically significant
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BMC Oral Health

ISSN: 1472-6831

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