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. 2022 Aug 2;12(8):e061929. doi: 10.1136/bmjopen-2022-061929

Table 2.

Associations between predictors and anxiety (SCAS-S) and health-related quality of life (Kidsscreen-10) analysed with multi-level mixed linear regression models stratified by gender

Model Anxiety (SCAS-S) Health-related quality of life (Kidsscreen-10)
Girls Boys Girls Boys
n Unstandardised
B (95% CI)
Standardised beta n Unstandardised
B (95% CI)
Standardised beta n Unstandardised
B (95% CI)
Standardised beta n Unstandardised
B (95% CI)
Standardised beta
1. MVPA
1.1. MVPA whole week 448 −0.045 (−0.079 to –0.011) −0.099 383 −0.026 (−0.058 to 0.007) −0.077 458 0.032 (0.009 to 0.054) 0.110 390 0.040 (0.015 to 0.065) 0.157
1.2. MVPA leisure time (weekdays) 503 −0.091 (−0.134 to –0.049) −0.161 468 −0.038 (−0.066 to –0.010) −0.095 514 0.048 (0.023 to 0.073) 0.130 477 0.036 (0.011 to 0.061) 0.114
1.3. MVPA leisure time (weekend) 455 −0.023 (−0.049 to 0.002) −0.067 388 −0.001 (−0.024 to 0.021) −0.005 465 0.023 (0.033 to 0.043) 0.105 396 0.034 (0.020 to 0.048) 0.183
1.4. MVPA school time 503 −0.027 (−0.100 to 0.047) −0.032 468 0.015 (−0.039 to 0.069) 0.027 514 0.013 (−0.033 to 0.059) 0.025 477 0.020 (−0.024 to 0.064) 0.046
2. SED
2.1. SED whole week 448 0.011 (−0.007 to 0.029) 0.084 383 0.011 (−0.005 to 0.028) 0.120 458 −0.021 (−0.032 to –0.009) −0.251 390 −0.021 (−0.033 to –0.008) −0.285
2.2. SED bouts (10 min) whole week 448 −0.001 (−0.014 to 0.012) −0.009 383 0.002 (−0.009 to 0.013) 0.021 458 −0.012 (−0.020 to –0.005) −0.150 390 −0.009 (−0.017 to –0.001) −0.113
2.3. SED leisure time (weekdays) 503 0.040 (0.017 to 0.062) 0.315 468 0.017 (−0.002 to 0.036) 0.195 514 −0.034 (−0.051 to –0.017) −0.421 477 −0.020 (−0.036 to –0.005 −0.299
2.4. SED leisure time (weekend) 455 0.007 (−0.007 to 0.020) 0.064 388 0.003 (−0.009 to 0.014) 0.035 465 −0.012 (−0.022 to –0.003) −0.192 396 −0.017 (−0.024 to –0.009) −0.299
2.5. SED school 503 −0.009 (−0.039 to 0.021) −0.041 468 −0.011 (−0.034 to 0.012) −0.062 514 −0.009 (−0.026 to 0.009) −0.060 477 −0.012 (−0.033 to 0.010) −0.083
3. Organised sports
Did not participate 112 ref 97 ref 114 ref 99 ref
Participated 321 −0.210 (−2.165 to 1.745) 283 −1.810 (−3.492 to –0.129) 329 −0.258 (−1.701 to 1.185) 288 1.214 (−0.459 to 2.888)
4. Screen time weekday
≤2 hours 162 ref 167 ref 166 ref 167 ref
3–4 hours 253 0.628 (−0.975 to 2.231) 230 0.342 (−0.782 to 1.466) 256 −1.337 (−2.175 to –0.499) 237 −0.785 (-1.758 to 0.188)
≥5 hours 116 4.056 (1.935 to 6.176) 110 0.883 (−0.583 to 2.348) 121 −3.503 (−4.786 to –2.220) 111 −1.539 (-2.664 to –0.413)
5. Screen time weekend
≤2 hours 61 ref 98 ref 65 ref 99 ref
3–4 hours 219 1.155 (−0.582 to 3.369) 164 −0.151 (−1.776 to 1.473) 225 −0.904 (−2.315 to 0.506) 166 0.157 (-1.725 to 1.411)
≥5 hours 252 3.340 (1.394 to 5.287) 243 1.060 (−0.207 to 2.326) 254 −2.520 (−4.014 to –1.027) 248 −0.842 (-2.320 to 0.636)

B unstandardised coefficients, beta standardised coefficients. All models were adjusted for parental education. Model 3 was adjusted for time spent in MVPA. Models 1–3 were adjusted for accelerometer wear-time.

MVPA, moderate-to-vigorous physical activity; SCAS-S, Short version of the Spence Children’s Anxiety Scale; SED, sedentary time.