Skip to main content
. 2019 Mar 28;16(7):1123. doi: 10.3390/ijerph16071123

Table 5.

Normative data (means and standard deviations) and internal consistency (α or KR-20) of the Child Relationship Development Inventory (CRDQ) for different raters and age-groups.

CRDQ MOTHERS FATHERS
AGE GROUPS n
f/m 1
Problem Frequency n
f/m 1
Problem Frequency
M (SD)
f/m 1
KR-20
f/m 1
M (SD)
f/m 1
α
f/m 1
M (SD)
f/m 1
KR-20
f/m 1
M (SD)
f/m 1
α
f/m1
Ages 2–4 185/187 0.11/0.13
(0.42)/(0.58)
0.47/0.69 78.21/74.49
(10.02)/(10.24)
0.87/0.85 139/130 0.05/0.13
(0.31)/(0.43)
0.49/0.37 69.60/68.32
(13.09)/(11.48)
0.91/0.88
Ages 5–6 162/177 0.19/0.34
(0.50)/(1.15)
0.26/0.81 79.20/76.54
(10.29)/(10.27)
0.88/0.88 118/122 0.25/0.37
(0.66)/(1.25)
0.45/0.84 73.75/69.95
(10.74)/(10.95)
0.89/0.87
Ages 7–8 267/252 0.20/0.40
(0.75)/(1.31)
0.31/0.84 79.52/75.52
(9.12)/(10.65)
0.88/0.87 154/170 0.29/0.34
(1.17)/(0.88)
0.87/0.65 72.68/69.05
(11.51)/(13.27)
0.90/0.90
Ages 9–10 190/222 0.39/0.58
(1.48)/(2.04)
0.67/0.94 77.06/75.30
(11.11)/(11.00)
0.89/0.88 116/131 0.26/0.40
(0.68)/(1.35)
0.33/0.86 71.29/68.52
(12.48)/(12.53)
0.90/0.90
Total 804/838 0.22/0.38
(0.89)/(1.41)
0.51/0.89 78.57/75.45
(10.09)/(10.58)
0.88/0.87 527/553 0.21/0.31
(0.80)/(1.03)
0.74/0.79 71.80/68.95
(12.07)/(12.18)
0.90/0.89

1 f = female; m = male.