Table 3

Scale scores, internal consistency, test–retest reliability and inter-relationships

Mean (SD)Skew, kurtosisInternal consistencyTest–retest reliability ICC(2,1)
(95% CI)
Correlations between subscales (Pearson’s r)
αOrdinal αSame period
(n=20)
New period
(n=32)
123456
Total score (n=525)1.82 (0.37)0.20, 3.170.770.820.69
(0.36 to 0.86)
0.30
(−0.05 to 0.58)
0.750.540.310.440.510.30
1. Material and home environment needs1.99 (0.62)−0.35, 2.400.790.840.53
(0.12 to 0.78)
0.46
(0.14 to 0.69)
1.000.51−0.08−0.150.65−0.02
2. Transport and school environment needs1.35 (0.78)0.20, 2.210.660.730.67
(0.33 to 0.85)
0.22
(−0.14 to 0.53)
1.00−0.20−0.240.43−0.09
3. Material reliability concerns1.81 (0.73)−0.48, 2.640.510.550.24
(−0.22 to 0.61)
0.08
(−0.27 to 0.41)
1.000.43−0.010.35
4. Change and disposal insecurity1.87 (0.61)−0.50, 3.290.740.800.56
(0.17 to 0.80)
0.16
(−0.20 to 0.48)
1.00−0.150.50
5. Reuse needs (n=286)2.08 (0.72)−0.64, 2.740.660.76n=12
0.67 (0.19 to 0.89)
n=17
0.72 (0.38 to 0.89)
1.000.06
6. Reuse insecurity (n=286)1.78 (0.73)−0.20, 2.380.470.56−0.07
(−0.60 to 0.50)
0.23
(−0.26 to 0.63)
1.00
  • ICC, intraclass correlation coefficient.