Influence of Adult Knee Height, Age at First Birth, Migration, and Current Age on Adult Physical Function of Bangladeshi Mothers and Daughters in the United Kingdom and Bangladesh
Table 5
Significant predictors of total score for the Short Physical Performance Battery (SPPB). Statistical significance of the hypothesized predictors was assessed by forward stepwise multiple regression. (a) Model for the mothers; variables entered into the regression are current age, age at first birth, height, knee height and BMI. (b) Model for the daughters; variables entered into the regression are current age, migrant (no = 0, yes = 1), height, knee height, BMI, mother’s height, mother’s knee height, mother’s age at first birth, and daughter’s birth order. The predictors shown in the tables are those that survived the forward stepwise regression process. The relative importance of each predictor is indicated by the absolute value of its standardized beta. For the mothers the variables “knee height” and “current age” are the best predictors of SPPB score. Greater knee height increases and older age decreases the score. For the daughters the variables “migrant” and “current age” are the best predictors of SPPB score. Being born in Bangladesh and then migration to the UK and older age both decrease the score.
(a) Mothers
Standardized beta
SE
Beta
SE
t (56)
P
Intercept
8.11
8.87
0.91
0.36
Current age
−0.43
0.12
−0.15
0.04
−3.70
0.00
Knee height
0.49
0.19
0.60
0.23
2.61
0.01
BMI
−0.22
0.11
−0.11
0.06
−1.92
0.06
Height
−0.23
0.19
−0.12
0.09
−1.22
0.23
N = 61, R = 0.58, = 0.34, adjusted = 0.29, F (4, 56) = 7.12, P = 0.0001.
(b) Daughters
Standardized beta
SE
Beta
SE
t (53)
P
Intercept
4.54
6.83
0.66
0.51
Migrant
−0.41
0.11
−2.58
0.70
−3.69
<0.01
Current age
−0.31
0.11
−0.12
0.04
−2.96
<0.01
Knee height
0.19
0.11
0.24
0.13
1.77
0.08
N = 58, R = 0.65, = 0.43, adjusted = 0.40, F (3, 54) = 13.43, P < 0.0001.
