Table 3.

Participant responses, item and step fit, and Item Characteristic Curve (ICC) interpretations. Samata Health Study participants (n=971)

Items and Response Categories	Responses (%)	Item and Step Fit		ICC Rangec
		Weighted mean squarea	Tb
1. contraception		1.2	2.0
2: not using contraception	90.5	1.2	1.8
1: using sometimes or failed at least once	7.0	1.0	0.3	√
0: always using contraception	2.5	1.2	1.0	√
2. timing		0.9	−2.5
2: wanted pregnancy then or sooner	42.8	1.0	−1.5
1: wanted pregnancy later	41.8	1.0	−0.5
0: did not want pregnancy at all	15.4	0.9	−1.7	√
3. intention		0.8	−4.3
2: intended pregnancy	61.4	0.8	−4.6
1: intentions kept changing	9.0	1.0	0	√
0: did not intend pregnancy	29.6	0.9	−3.0
4. want		0.8	−4.3
2: wanted baby	69.5	0.8	−4.2
1: mixed feelings about having baby	6.4	1.0	0	√
0: did not want baby	24.1	0.8	−3.6
5. discuss		1.0	0.7
2: agreed to get pregnant	65.9	0.9	−2.1
1: discussed but not agreed to get pregnant	11.0	1.0	−0.3	√
0: never discussed getting pregnant	23.1	1.2	3.2b
6. prepare		1.3	7.8b
2: did 2 or more preparatory behaviors	40.7	1.2	5.6b	√
1: did 1 preparatory behavior	21.3	1.0	0b
0: did no preparatory behaviors	37.9	1.3	7.6b

Notes:

^aAll items and step fits were within the acceptable weighted mean square statistic range: 0.75-1.33.

^bLower than expected item or step fit (t>2.0) based on the t-test for the infit statistic

^c√ indicates that the response category is not the most common selection at any range of the LMUP scale.