Data analysis
Data for all phases were analysed using a standard statistical
package, SPSS V19 (SPSS Inc., 2010). Questionnaires and sample
meal tray recordings were analysed using descriptive statistics.
Correlations were performed using Spearman's rho to examine
relationships between grip and pinch strengths and time taken to
open the items. A correlation of 0 indicating no relationship, while a
score of 1 or 1 indicating complete correlation. According to
Cohen (1988, cited in Pallant, 2005) a small correlation is between
±.10 and ± .29, a medium correlation between ±.30 and ± .49 and a
large correlation is ±.50 and ± 1.0. Negative correlations indicated
shorter opening times and therefore better pack efficiency.