Measuring health-related social deprivation in small areas: development of an index and examination of its association with cancer mortality

Table 4 Pearson correlation between social deprivation index candidates and health outcomes during 2006–2010 and socio-economic factors

Construction of the SDI	SDI1	SDI2	SDI3	SDI4	SDI5	SDI6
Construction of the SDI	Previous SDI by Wong et al. (2008)^a	Factor score of factor 1 from factor analysis of the six variables in SDI1	Factor score sum of factor 1–3 in factor analysis of the six variables in SDI1	Sum: no schooling, low income, non-nuclear family, divorced/separate, one-person household, and non-owner	Sum: no schooling, low income, non-nuclear family, divorced/separate, one-person household, and non-managerial occupation	Sum: no schooling, low income, non-nuclear family, divorced/separate, two-person household, and non-managerial occupation
SMR^b < 75 years (chronic diseases)	0.39*	0.31*	0.45*	0.39*	0.44*	0.45*
P-value	< 0.0001	0.0024	< 0.0001	< 0.0001	< 0.0001	< 0.0001
SMR^b < 75 years (All cause)	0.39*	0.33*	0.46*	0.35*	0.44*	0.46*
P-value	< 0.0001	0.0011	< 0.0001	< 0.0001	< 0.0001	< 0.0001
SER^c (Inpatient)	0.36*	0.40*	0.33*	0.39*	0.40*	0.48*
P-value	< 0.0001	0.0002	0.0027	< 0.0001	< 0.0001	< 0.0001
f1^d of 14-variables factor analysis	0.90*	0.81*	0.89*	0.82*	0.92*	0.95*
P-value	< 0.0001	< 0.0001	< 0.0001	< 0.0001	< 0.0001	< 0.0001
f2^d of 14-variables factor analysis	0.23*	-0.42*	-0.01	0.18*	0.25*	0.07
P-value	0.0034	< 0.0001	0.9329	0.0232	0.0021	0.4159
f3^d of 14-variables factor analysis	0.22*	0.26*	0.41*	0.43*	0.20*	0.09
P-value	0.0064	0.0085	< 0.0001	< 0.0001	0.014	0.2721

^*P < 0.05; The value in the table are Pearson’s r and their P values
^aSix variables for previous SDI by Wong et al. (2008): (1) unemployment, (2) low income, (3) no schooling, (4) one-person household, (5) never married persons, and (6) sub-tenancy
^bSMR Standardized mortality rate
^cSER Standardized episode rate
^dThey are factor scores from factor analysis of the 14 socio-economic variables, please refer to the Table 2

ISSN: 1475-9276