Adding a Question About Method Switching to the Method Information Index Is a Better Predictor of Contraceptive Continuation

Figures & Tables

TABLE 1.

Respondent Characteristics and Method Information Measures at Enrollment (N=2,699)

Characteristic	No. (%)
Age, years
≤24	1,066 (39.5)
25–29	935 (34.6)
≥30	698 (25.9)
Education
None	605 (22.4)
Primary	335 (12.4)
Middle	386 (14.3)
Secondary	798 (29.6)
Higher secondary	575 (21.3)
Religion
Hindu	2,272 (84.2)
Muslim	418 (15.5)
Other	9 (0.3)
No. of living children
0	23 (0.9)
1	1,118 (41.4)
2	891 (33.0)
3 or more	667 (24.7)
Previous modern method use
Yes	1,037 (38.4)
No	1,662 (61.6)
Method selected at enrollment
OCPs	1,066 (39.5)
PPIUD	412 (15.3)
Interval IUD	640 (23.7)
Injectable	581 (21.5)
State
Haryana	908 (33.6)
Odisha	1,791 (66.4)
MII
<3 questions	1,711 (63.4)
All 3 questions	988 (36.6)
MIIplus
<4 questions	1,779 (65.9)
All 4 questions	920 (34.1)
MIIplus variation
<3 questions of MII	1,711 (63.4)
MII	68 (2.5)
MIIplus	920 (34.1)

Abbreviations: IUD, intrauterine device; MII, Method Information Index; MIIplus, Method Information Index including the question, “Were you told about the possibility of switching to another method if the method you selected was not suitable?”; OCPs, oral contraceptive pills; PPIUD, postpartum intrauterine device.

TABLE 2.

Kaplan-Meier Estimates of 100-Day Continuation of Modern Contraception (n=2,267)

Method Information Indicators	% (95% CI)
MII
<3 questions	89.3 (87.5, 90.8)
All 3 questions	93.7 (91.7, 95.2)
MIIplus
<4 questions	89.0 (87.3, 90.5)
All 4 questions	94.7 (92.7, 96.1)
MIIplus variation
<3 questions of MII	89.3 (87.5, 90.8)
MII	82.3 (70.3, 89.8)
MIIplus	94.7 (92.7, 96.1)

Abbreviations: CI, confidence interval; MII, Method Information Index; MIIplus, Method Information Index including the question, “Were you told about the possibility of switching to another method if the method you selected was not suitable?”

TABLE 3.

Crude and Adjusted Hazard Ratios of Contraceptive Discontinuation 100 Days Later (n=2,267)

Models of Method Information Indicators	HR (95% CI)	AHR^a (95% CI)
Model I: MII
<3 questions	Reference	Reference
All 3 questions	0.59^*** (0.42, 0.80)	0.65^* (0.47, 0.91)
Model II: MIIplus
<4 questions	Reference	Reference
All 4 questions	0.48^*** (0.33, 0.68)	0.53^*** (0.37, 0.76)
Model III: MIIplus variation
<3 questions of MII	0.57 (0.31, 1.06)	0.56 (0.30, 1.04)
MII	Reference	Reference
MIIplus	0.28^*** (0.14, 0.55)	0.31^*** (0.17, 0.61)

Abbreviations: AHR, adjusted hazard ratio; CI, confidence interval; HR, hazard ratio; MII, Method Information Index; MIIplus, Method Information Index including the question, “Were you told about the possibility of switching to another method if the method you selected was not suitable?”
↵* P≤.05; **P≤.01; ***P ≤.001.
↵a Adjusted for age, education, religion, number of living children, previous modern method use, method selected at enrollment, and state.