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. 2025 Sep 26;23:551–558. doi: 10.3290/j.ohpd.c_2283

Table 2.

Analysis of categorical data by groups

RCT

DI

Total

Statics

P

y Yates’ continuity correction; x Fisher Freeman–Halton; n (%)

Socioeconomic status

Upper

8 (38.1)

14 (73.7)

22 (55)

0.025x

Middle

6 (28.6)

0 (0)

6 (15)

Lower

7 (33.3)

5 (26.3)

12 (30)

Gender

Female

12 (57.1)

6 (31.6)

18 (45)

1.702

0.192y

Male

9 (42.9)

13 (68.4)

22 (55)

Marital status

Married

13 (61.9)

12 (63.2)

25 (62.5)

>0.999x

Single

5 (23.8)

4 (21.1)

9 (22.5)

Divorced

3 (14.3)

3 (15.8)

6 (15)

Toothbrushing

Never

1 (4.8)

0 (0)

1 (2.5)

0.553x

Rarely

4 (19.1)

2 (10.5)

6 (15)

Once a day

3 (14.3)

3 (15.8)

6 (15)

Twice a day or more

13 (61.9)

14 (73.7)

27 (67.5)

Dental flossing

Never

10 (47.6)

9 (47.4)

19 (47.5)

0.312 x

Rarely

4 (19.1)

6 (31.6)

10 (25)

Once a day

5 (23.8)

1 (5.3)

6 (15)

Twice a day or more

2 (9.5)

3 (15.8)

5 (12.5)

Mouthwash

Yes

9 (42.9)

9 (47.4)

18 (45)

No

12 (57.1)

10 (52.6)

22 (55)

0.000

>0.999 y

Treatment region

Anterior

6 (28.6)

5 (26.3)

11 (27.5)

0.000

>0.999y

Posterior

15 (71.4)

14 (73.7)

29 (72.5)

Smoking habit

Yes

6 (28.6)

6 (31.6)

12 (30)

0.043

0.836x

No

15 (71.4)

13 (68.4)

28 (70)

Body mass index

Underweight

4 (19.1)

0 (0)

4 (10)

0.254 x

Normal weight

10 (47.6)

10 (52.6)

20 (50)

Overweight

5 (23.8)

7 (36.8)

12 (30)

Obesity

2 (9.5)

2 (10.5)

4 (10)