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Table 1 Spearman correlation coefficients in cross-sectional analysis and time-lagged analysis between the ASIR of NPC and milk and dairy consumption in 48 countries/regions, 1968–2002

From: Milk consumption in relation to incidence of nasopharyngeal carcinoma in 48 countries/regions

  

Cross sectional

Time-lagged (consumption period)

1998–2002

1993–1997 (5-year lag)

1988–1992 (10-)

1983–1987 (15-)

1978–1982 (20-)

1973–1977 (25-)

1968–1972 (30-)

Milk excluding butter (MEBC) (N = 48)

Males

−0.55***

−0.54***

−0.53***

−0.53***

−0.54***

−0.54***

−0.56***

Females

−0.57***

−0.55***

−0.54***

−0.55***

−0.55***

−0.55***

−0.56***

Milk, whole (MWF) (N = 46)

Males

−0.35*

−0.44**

−0.45**

−0.46**

−0.45**

−0.47**

−0.52***

Females

−0.29*

−0.40**

−0.43**

−0.46**

−0.45**

−0.47**

−0.51***

Cheese (CHF) (N = 43)

Males

−0.40**

−0.40**

−0.36*

−0.33*

−0.34*

−0.36*

−0.37*

Females

−0.42**

−0.40**

−0.37*

−0.31*

−0.32*

−0.30*

−0.29

Butter & Ghee (BGF) (N = 43)

Males

−0.36*

−0.29

−0.32*

−0.30*

−0.33*

−0.35*

−0.40**

Females

−0.44**

−0.36*

−0.38*

−0.38*

−0.39*

−0.40**

−0.43**

Fresh Cream (CRF) (N = 30)

Males

−0.53**

−0.65***

−0.71***

−0.68***

−0.68***

−0.65***

−0.65***

Females

−0.63***

−0.71***

−0.75***

−0.72***

−0.67***

−0.62***

−0.58***

  1. ASIR age standardized incidence rate, NPC nasopharyngeal carcinoma
  2. *p < 0.05; **p < 0.01; ***p < 0.001 (2-tailed)