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. 2022 Nov 28;19(23):15854. doi: 10.3390/ijerph192315854

Table 5.

Multiple logistic regressions analysis of the predictors: age, height, body weight, BMI, years of training, number of trainings per week, duration of a single training, swimming hours, kilometers, perceived effort associated with less profuse bleeding, more profuse bleeding, bleeding lasts less than 3 days, amenorrhea, and injuries incidence.

Dependent Predictors B Wald p OR LLCI UCLI
Less profuse bleeding
R2CS = 0.24
age −0.27 1.33 0.248 0.77 0.49 1.20
height 1.00 1.38 0.241 2.73 0.51 14.56
body weight −1.21 1.04 0.307 0.30 0.03 3.04
BMI 2.89 0.69 0.405 18.06 0.02 16,445.46
years of training −0.36 3.10 0.078 0.70 0.47 1.04
number of trainings per week 0.03 0.00 0.960 1.03 0.30 3.50
duration of a single training 1.70 2.25 0.134 5.46 0.59 50.22
swimming hours 4.91 3.11 0.078 136.23 0.58 32,134.01
kilometers swam during 1 training −2.39 3.27 0.071 0.09 0.01 1.22
perceived effort 0.69 2.57 0.109 2.00 0.86 4.68
More profuse bleeding
R2CS = 0.21
age 0.17 0.64 0.422 1.18 0.79 1.77
height −0.02 0.00 0.968 0.98 0.30 3.15
body weight 0.04 0.00 0.961 1.04 0.22 4.90
BMI −0.03 0.00 0.989 0.97 0.01 104.47
years of training 0.24 4.62 0.032 1.27 1.02 1.58
number of trainings per week −1.19 3.39 0.066 0.30 0.08 1.08
duration of a single training −1.66 2.93 0.087 0.19 0.03 1.27
swimming hours −0.09 0.00 0.951 0.91 0.05 16.22
kilometers swam during 1 training 0.46 0.42 0.515 1.58 0.40 6.21
perceived effort 0.08 0.16 0.691 1.08 0.74 1.58
Bleeding lasts less than 3 days
R2CS = 0.19
age −0.07 0.17 0.682 0.93 0.67 1.31
height 1.01 2.58 0.108 2.74 0.80 9.36
body weight −1.42 2.86 0.091 0.24 0.05 1.25
BMI 4.24 2.92 0.087 69.66 0.54 9022.81
years of training −0.11 1.12 0.291 0.89 0.72 1.10
number of trainings per week −0.17 0.13 0.716 0.84 0.34 2.11
duration of a single training 0.44 0.29 0.588 1.56 0.31 7.71
swimming hours 0.20 0.02 0.894 1.22 0.06 24.00
kilometers swam during 1 training 1.06 2.22 0.136 2.88 0.72 11.61
perceived effort −0.15 0.46 0.496 0.86 0.57 1.32
Amenorrhea
R2CS = 0.05
age −0.07 0.10 0.749 0.94 0.63 1.40
height 0.46 0.52 0.472 1.58 0.45 5.54
body weight −0.55 0.42 0.515 0.58 0.11 3.02
BMI 1.66 0.42 0.517 5.24 0.03 789.89
years of training 0.03 0.12 0.728 1.04 0.85 1.26
number of trainings per week −0.88 1.78 0.182 0.42 0.11 1.51
duration of a single training −0.30 0.09 0.763 0.74 0.11 5.19
swimming hours −0.57 0.14 0.706 0.56 0.03 11.03
kilometers swam during 1 training 0.06 0.01 0.936 1.06 0.25 4.45
perceived effort −0.03 0.02 0.889 0.97 0.66 1.44
Injuries incidence
R2CS = 0.23
age 0.19 0.50 0.481 1.21 0.71 2.05
height −0.24 0.14 0.708 0.79 0.23 2.75
body weight 0.54 0.42 0.516 1.72 0.33 8.84
BMI −1.47 0.34 0.560 0.23 0.00 32.22
years of training 0.11 0.63 0.427 1.12 0.85 1.48
number of trainings per week −0.39 0.42 0.515 0.68 0.21 2.19
duration of a single training −0.01 0.00 0.996 0.99 0.12 8.14
swimming hours 4.08 2.91 0.088 59.02 0.54 6410.08
kilometers swam during 1 training −1.75 2.77 0.096 0.17 0.02 1.37
perceived effort −0.07 0.08 0.774 0.93 0.57 1.52

B: regression coefficient; Wald: Wald statistic; OR: odds ratio; LLCI, ULCI: lower and upper limits of 95% confidence intervals for the odds ratio. Constants omitted for simplicity.