. Author manuscript; available in PMC: 2013 Feb 1.

Published in final edited form as: Infant Behav Dev. 2011 Sep 3;35(1):167–173. doi: 10.1016/j.infbeh.2011.07.002

Table 2.

Parenting Stress Index Percentiles.

Parenting stress scales	6 months		18 months		6–12 month correlation
Parenting stress scales	M	SD	M	SD	r	P
Parental distress	37	28	36	27	.56	<.001
Parent child dysfunctional interaction	31	25	34	27	.68	<.001
Difficult child	25	24	33	30	.55	<.001
Total score	29	27	32	31	.66	<.001