. Author manuscript; available in PMC: 2019 Oct 1.

Published in final edited form as: Genet Med. 2018 Sep 14;21(4):994–1000. doi: 10.1038/s41436-018-0275-2

Table 2.

Objectively assessed knowledge					Overall significance	Video vs. written
	Video-information group (n=22)		Written-information group (n=21)		Total n=43
	Pre	Post	Pre	Post
Knowledge about benefits (0–10 scale)	5.7	7.5	4.3	6.6	F(1)=0.71; p=0.40	p=0.30
Mean (SD)	2.9	2.1	2.8	2.6

Knowledge about limitations (0–10 scale)	3.4	3.8	3.1	2.8	F(1)=2.17; p=0.15	p=0.04
Mean (SD)	3.1	2.6	2.7	2.8

Knowledge about lifestyle (1–5 item)	3.5	4.2	3.4	4.3	F(1)=0.14; p=0.71	p=0.52
Mean (SD)	1.1	1.0	1.3	0.8	F(1)=0.14; p=0.71	p=0.52

Changes in Objective Knowledge scores were compared between the two experimental groups by conducting ANOVAs, with experimental group, gender, and baseline Objective Knowledge scores as independent variables. Pre- and post-intervention Objective Knowledge scores were compared cross-sectionally between the two experimental groups using Pearson Chi-square tests.