Table 4.

Frequency of mother-infant interactive play

	Responsive Parenting	Control	P value
Frequency of tummy time (%)
8 weeks (n = 235)			0.25
Not every day, ≤6 days/week	13.0	25.0
Every day, 1–2 times/day	44.4	45.0
Every day, ≥3 times/day	42.6	30.0
20 weeks (n = 246)			0.78
Not every day, ≤6 days/week	11.4	16.3
Every day, 1–2 times/day	39.8	42.3
Every day, ≥3 times/day	48.8	41.5
Frequency of playing on the floor with infant (%)
8 weeks (n = 223)			0.43
Less than 1 time/day	16.5	15.0
1–3 times/day	63.5	60.0
≥ 4 times/day	20.0	25.0
20 weeks (n = 231)			0.69
Less than 1 time/day	3.3	7.4
1–3 times/day	50.4	45.9
≥ 4 times/day	46.3	46.7