Is a motivational interviewing based lifestyle intervention for obese pregnant women across Europe implemented as planned? Process evaluation of the DALI study

Table 6 Association for dose and fidelity with change in gestational weight from first to last measurement across the three lifestyle groups

Process elements: dose, context and fidelity	HE	HE + PA	PA	Gestational weight gain (kg)	Gestational weight gain (kg)	Gestational weight gain (kg)
	Mean (SD) N	Mean (SD) N	Mean (SD) N	β (95%CI)	β (95%CI)	β (95%CI)
	Mean (SD) N	Mean (SD) N	Mean (SD) N	HE	HE + PA	PA
Dose:
Total number of F2F conversations	4.5 (1.0)	4.7 (0.6)	4.4 (1.2)	1.89	−0.89	−0.21
Total number of F2F conversations	34	34	37	(−0.78; 4.55)	(−3.45; 1.67)	(−1.60; 1.18)
Total number of contacts (F2F + phone/email)	7.5 (1.8)	7.1 (1.8)	6.6 (2.1)	0.08	−0.33	0.02
Total number of contacts (F2F + phone/email)	34	34	37	(−1.41; 1.57)	(−1.23; 0.57)	(−0.75; 0.78)
Fidelity:
Competence in Motivational Interviewing (high vs. low)^a	0.50 (0.51)	0.54 (0.51)	0.42 (0.50)	1.11	−0.26	−3.13
Competence in Motivational Interviewing (high vs. low)^a	26	24	26	(−4.27; 6.49)	(−5.23; 4.71)	(−7.03; 0.77)
DALI as intended (MI + 5F2F) (yes vs. no)^b	0.42 (0.50)	0.50 (0.51)	0.42 (0.50)	−0.32	−0.70	−3.13
DALI as intended (MI + 5F2F) (yes vs. no)^b	26	24	26	(−5.37; 5.09)	(−5.42; 4.02)	(−7.03; 0.77)

F2F face-to-face, HE healthy eating, PA physical activity, HE + PA healthy eating and physical activity, MI motivational interviewing. Gestational weight gain was calculated by subtracting the baseline weight from the weight measured at the final measurement and is corrected for BMI at baseline and total weeks between baseline and third measurement. If significant associations (p < 0.05) were found these were printed in bold. Significant negative beta’s regression coefficients represent a beneficial effect (decline in weight gain) and vice versa
^a‘high’ corresponds with four or more out of seven MITI elements according to ‘beginning proficiency’ on the MITI
^b‘yes’ corresponds with a lifestyle coach who was more competent in MI and a participant who received five face-to-face sessions

ISSN: 1471-2393