From: Manual wheelchair downhill stability: an analysis of factors affecting tip probability
 | Forward tip vs Stop | Backward tip vs Stop | Rolled vs Stop | Backward vs Forward tip | Rolled vs Forward tip | Rolled vs Backward tip |
---|---|---|---|---|---|---|
Bump height (cm) | −0.127 (0.292) | −6.088*** (0.467) | −7.612*** (0.473) | −5.962*** (0.439) | −7.486*** (0.448) | −1.524*** (0.148) |
Speed (km/hr) | 2.311*** (0.235) | 2.684*** (0.244) | 2.851*** (0.244) | 0.373*** (0.041) | 0.540*** (0.040) | 0.167*** (0.022) |
Rear axle position (cm) | 0.170*** (0.038) | 0.547*** (0.049) | 0.128** (0.042) | 0.377*** (0.035) | −0.042 (0.024) | −0.419*** (0.032) |
Backrest angle (°) | −0.119*** (0.035) | 0.258*** (0.042) | 0.042 (0.038) | 0.377*** (0.031) | 0.160*** (0.026) | −0.216*** (0.022) |
Slope (°) | 0.532*** (0.065) | 0.439*** (0.068) | 0.493*** (0.067) | −0.094** (0.034) | −0.039 (0.030) | 0.054* (0.025) |
User position (cm) | 0.006 (0.073) | −0.375*** (0.084) | −0.170* (0.080) | − 0.382*** (0.054) | −0.176*** (0.047) | 0.205*** (0.039) |
Seat angle (°) | −0.059 (0.035) | 0.086* (0.041) | 0.029 (0.039) | 0.145*** (0.026) | 0.087*** (0.023) | −0.058** (0.019) |
User mass (kg) | 0.025** (0.011) | −0.010 (0.012) | 0.005 (0.012) | −0.035*** (0.008) | −0.020** (0.007) | 0.015** (0.006) |