Table 3.
Results from single and multiple mediation models (B, 95% confidence interval) examining potential cognitive mediators of duration of sport participation (>=30 min/wk)1
| |
|
Single mediator models |
Multiple mediator models |
|||
|---|---|---|---|---|---|---|
| Path a B (95% CI) | Path b OR (95% CI) | Mediated effect (95% CI)2 | Path b OR (95%CI) | Mediated effect (95% CI)2 | Percent Mediated3 | |
|
Physical activity equipment |
|
|
|
|
|
|
| Attitude |
0.018 (0.012, 0.023) |
2.42 (2.05, 2.87) |
0.024 (0.017, 0.031) |
1.33 (1.10, 1.61) |
0.008 (0.002, 0.013) |
6.6% |
| Beliefs about weight gain |
0.039 (0.019, 0.059) |
1.11 (1.06, 1.16) |
0.005 (0.002, 0.008) |
1.07 (1.02, 1.12) |
0.003 (0.001, 0.006) |
2.8% |
| Enjoyment |
0.020 (0.012, 0.028) |
2.51 (2.20, 2.87) |
0.031 (0.022, 0.040) |
1.62 (1.39, 1.88) |
0.016 (0.010, 0.023) |
12.8% |
| Perceived behavioural control |
0.034 (0.022, 0.046) |
2.14 (1.97, 2.33) |
0.036 (0.026, 0.047) |
1.85 (1.69, 2.01) |
0.029 (0.020, 0.038) |
21.0% |
| Total mediated effect |
|
|
|
|
0.056 (0.045, 0.067) |
33.9% |
|
Financial support |
|
|
|
|
|
|
| Attitude |
0.042 (0.033, 0.051) |
2.27 (1.91, 2.69) |
0.034 (0.024, 0.044) |
1.30 (1.07, 1.58) |
0.011 (0.003, 0.020) |
2.9% |
| Beliefs about weight gain |
0.041 (0.013, 0.069) |
1.11 (1.06, 1.17) |
0.004 (0.001, 0.008) |
1.07 (1.02, 1.13) |
0.003 (0.000, 0.006) |
0.8% |
| Enjoyment |
0.079 (0.067, 0.092) |
2.29 (2.00, 2.61) |
0.066 (0.051, 0.080) |
1.50 (1.30, 1.74) |
0.032 (0.020, 0.045) |
8.1% |
| Perceived behavioural control |
0.087 (0.069, 0.105) |
2.08 (1.91, 2.26) |
0.064 (0.049, 0.079) |
1.83 (1.67, 2.00) |
0.053 (0.039, 0.066) |
12.5% |
| Total mediated effect |
|
|
|
|
0.099 (0.082, 0.116) |
21.2% |
|
Logistic support |
|
|
|
|
|
|
| Attitude |
0.036 (0.027, 0.045) |
2.35 (1.98, 2.79) |
0.031 (0.021, 0.041) |
1.34 (1.11, 1.63) |
0.011 (0.003, 0.018) |
3.1% |
| Beliefs about weight gain |
0.032 (0.003, 0.060) |
1.12 (1.07, 1.17) |
0.004 (0.000, 0.007) |
1.08 (1.03, 1.13) |
0.002 (0.000, 0.005) |
0.7% |
| Enjoyment |
0.070 (0.057, 0.082) |
2.37 (2.07, 2.71) |
0.060 (0.046, 0.074) |
1.53 (1.32, 1.78) |
0.030 (0.018, 0.041) |
8.2% |
| Perceived behavioural control |
0.087 (0.070, 0.105) |
2.09 (1.92, 2.27) |
0.064 (0.049, 0.079) |
1.82 (1.66, 1.99) |
0.052 (0.039, 0.065) |
13.5% |
| Total mediated effect |
|
|
|
|
0.092 (0.076, 0.109) |
21.7% |
|
Emotional support |
|
|
|
|
|
|
| Attitude |
0.035 (0.023, 0.047) |
2.43 (2.05, 2.87) |
0.031 (0.019, 0.043) |
1.35 (1.12, 1.63) |
0.011 (0.003, 0.018) |
3.1 |
| Beliefs about weight gain |
0.059 (0.021, 0.096) |
1.11 (1.06, 1.17) |
0.006 (0.001, 0.011) |
1.07 (1.02, 1.12) |
0.004 (0.000, 0.008) |
1.2 |
| Enjoyment |
0.062 (0.046, 0.079) |
2.47 (2.16, 2.82) |
0.057 (0.039, 0.074) |
1.59 (1.37, 1.85) |
0.029 (0.017, 0.041) |
8.1 |
| Perceived behavioural control |
0.088 (0.064, 0.112) |
2.12 (1.95, 2.30) |
0.066 (0.046, 0.085) |
1.83 (1.67, 2.00) |
0.053 (0.035, 0.070) |
13.9 |
| Total mediated effect |
|
|
|
|
0.096 (0.076, 0.117) |
22.8% |
|
Reinforcement |
|
|
|
|
|
|
| Attitude |
0.010 (-0.001, 0.020) |
2.57 (2.17, 3.04) |
0.009 (-0.001, 0.019) |
- |
- |
- |
| Beliefs about weight gain |
0.016 (-0.018, 0.050) |
1.12 (1.07, 1.18) |
0.002 (-0.002, 0.006) |
- |
- |
- |
| Enjoyment |
0.016 (0.001, 0.031) |
2.59 (2.27, 2.96) |
0.015 (0.001, 0.030) |
1.82 (1.58, 2.09) |
0.009 (0.000, 0.019) |
50.3% |
| Perceived behavioural control |
0.025 (0.003, 0.047) |
2.19 (2.01, 2.37) |
0.020 (0.003, 0.037) |
1.90 (1.74, 2.07) |
0.016 (0.002, 0.030) |
63.1% |
| Total mediated effect |
|
|
|
|
0.026 (0.009, 0.042) |
73.1% |
|
Parental modelling (hr/week) |
|
|
|
|
|
|
| Attitude |
0.007 (0.002, 0.011) |
2.55 (2.15, 3.01) |
0.006 (0.002, 0.011) |
1.37 (1.14, 1.66) |
0.002 (0.000, 0.004) |
3.8% |
| Beliefs about weight gain |
0.030 (0.015, 0.045) |
1.12 (1.07, 1.17) |
0.003 (0.001, 0.005) |
1.07 (1.02, 1.13) |
0.002 (0.000, 0.004) |
3.8% |
| Enjoyment |
0.007 (0.001, 0.013) |
2.58 (2.26, 2.95) |
0.007 (0.001, 0.013) |
1.63 (1.41, 1.89) |
0.004 (0.000, 0.007) |
6.2% |
| Perceived behavioural control |
0.021 (0.012, 0.031) |
2.17 (2.00, 2.36) |
0.017 (0.009, 0.024) |
1.85 (1.69, 2.02) |
0.013 (0.007, 0.019) |
19.6% |
| Total mediated effect |
|
|
|
|
0.021 (0.014, 0.028) |
28.0% |
|
Co-participation |
|
|
|
|
|
|
| Attitude |
0.006 (-0.002, 0.014) |
2.57 (2.18, 3.05) |
0.006 (-0.002, 0.014) |
- |
- |
- |
| Beliefs about weight gain |
0.010 (-0.016, 0.037) |
1.12 (1.07, 1.18) |
0.001 (-0.002, 0.004) |
- |
- |
- |
| Enjoyment |
0.014 (0.002, 0.026) |
2.60 (2.27, 2.96) |
0.013 (0.002, 0.025) |
1.82 (1.59, 2.09) |
0.008 (0.001, 0.016) |
suppressed |
| Perceived behavioural control |
0.033 (0.016, 0.050) |
2.19 (2.02, 2.38) |
0.026 (0.012, 0.040) |
1.90 (1.74, 2.07) |
0.021 (0.010, 0.033) |
suppressed |
| Total mediated effect | 0.030 (0.016, 0.043) | suppressed | ||||
Path a: association between family environment variable and mediator; Path b: association between mediator and sports participation.
1 Path a and path b adjusted for covariates (child age, sex, responding parents’ highest education level).
2 Mediated effect calculated from path b coefficient (not Odds Ratio).
3 Percentage mediated: a*b/c’+a*b.
Bold: significant associations.