Table 2 Beverage preference scores and intraclass correlations (ICC) by zygosity.

From: The individual environment, not the family is the most important influence on preferences for common non-alcoholic beverages in adolescence

Beverage item

n 1 (%)2

Mean preference score 3 (SD)

MZ 4 ICC 4 (95% CI)

DZ 4 ICC 4 (95% CI)

SSBs 4

2841 (99.2)

3.73 (1.37)

0.383

(0.301, 0.458)

0.155

(0.085, 0.223)

NNSBs 4

2827 (98.7)

3.64 (1.34)

0.393

(0.221, 0.384)

0.222

(0.155, 0.288)

Orange juice

2849 (99.4)

4.43 (0.97)

0.261

(0.174, 0.345)

0.000

(0.000, 0.051)

Fruit cordial

2847 (99.3)

4.23 (1.02)

0.422

(0.344, 0.494)

0.212

(0.142, 0.280)

Milk

2707 (94.5)

4.22 (0.95)

0.377

(0.289, 0.457)

0.091

(0.013, 0.168)

Tea

2415 (84.3)

4.31 (1.08)

0.532

(0.450, 0.604)

0.000

(0.000, 0.066)

Coffee

1905 (66.5)

3.85 (1.29)

0.341

(0.214, 0.453)

0.069

(0.000, 0.172)

  1. 1Number of observations included in mean beverage liking score (excl. observations from individuals that never consume the specific beverage).
  2. 2Percentage of the full sample that reported occasional consumption of the beverage.
  3. 3Preference scores were rated on a 5-point Likert scale, with a higher score indicating a higher preference for the beverage item.
  4. 4Abbreviations: ICCs: Intraclass Correlations; MZ: Monozygotic; DZ: Dizygotic; NNSBs: Non-nutritive sweetened beverages, SSB: Sugar-sweetened beverages.
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