Table 2: Demographic risk factors for ankle sprain (n = 255).

Risk Factors Frequency of Ankle Sprain
1 time
(n = 148) 		More than 1 Time
(n = 107) 		P value
Age, mean ± SD (y) 23.5 ± 5.4 23.2 ± 6.1 0.689
BMI, mean ± SD 23.0 ± 4.3 22.8 ± 4.2 0.767
Marital Status, n (%)
Single
Married
119 (80.4)
29 (19.6)
93 (86.9)
14 (13.1)		 0.171
Education level
PhD
Master
Bachelor
Diploma
School
4 (2.7)
4 (2.7)
56 (37.8)
26 (17.6)
58 (39.2)
1 (0.9)
2 (1.9)
51 (47.7)
14 (13.1)
39 (36.4)		 0.235
Duration of playing football (y)
1-5
5-10
>10
28 (18.9)
47 (31.7)
73 (49.4)
12 (11.2)
39 (36.4)
56 (52.3)		 0.239
Frequency of playing per week
1 time
2 times
More than 2 times
31 (20.9)
52 (35.2)
65 (43.9)
14 (13.1)
43 (40.2)
50 (46.7)		 0.316
Professional football player (Yes) 49 (33.1) 36 (33.6) 0.258

Note. Data are expressed as mean ± standard deviation or number (percentage) and were analyzed for the association between the demographic variables and the frequency of ankle sprain using chi-square or Fisher exact tests for categorical data and unpaired t-test for continuous data. BMI indicates body mass index.