Statewide Tables from the 2006 Maternal and Infant Health Assessment (MIHA) survey

MO-07-0127 MIHA

Introduction to the MIHA Survey and Explanation of Terms

The California Maternal and Infant Health Assessment (MIHA) is an annual, statewide-representative survey of women who recently gave birth. It is completed via the mail, with telephone follow-up to non-respondents.  MIHA is administered in English and Spanish only.

The MIHA survey data have been linked to birth certificate information and weighted to reflect sampling design.  The sample was stratified by race, education and region* (PDF)within California; African-American women were oversampled. There were too few American Indian women in the study to examine them separately.  Age, parity and region* (PDF)of residence come from birth certificate information linked to MIHA, and are not asked in MIHA.  All other variables are taken from the MIHA responses.  The numbers reported are unweighted, but the percents are weighted.  Weighted percents take into account the sample stratification and the oversampling.  Some measures had too small a number (unweighted numerator < 10) to calculate a stable, representative percentage and are indicated by an asterisk (*) only.  95% CI represents "95% Confidence Interval," which means that 95% of the time the true value should be between these two values.  However, please remember that this survey is self-administered, which may affect some answers.  Thus, one should not expect estimates from the MIHA survey to be identical to surveys that collect data through in-person interview or telephone call.     

*The sampled regions include all California counties, assigned in the following way:
Los Angeles County
San Francisco Bay Area: Counties of Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano, Sonoma
San Diego County
Orange County
San Joaquin Valley: Counties of Fresno, Kern, Kings, Madera, Merced, San Joaquin, Stanislaus, Tulare
Greater Sacramento: Counties of El Dorado, Placer, Sacramento, Sutter, Yolo, Yuba
Southeastern California: Counties of Imperial, Riverside, San Bernardino
Central Coast: Counties of Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz, Ventura
Northern/Mountain Area: Counties of Alpine, Amador, Butte, Calaveras, Colusa, Del Norte, Glenn, Humboldt, Inyo, Lake, Lassen, Mariposa, Mendocino, Modoc, Mono, Nevada, Plumas, Shasta, Sierra, Siskiyou, Tehama, Trinity, Tuolumne

A.  Before Pregnancy

Table A1. Pregnancy Intention, 2006, updated March, 2008 (Excel)

Table A2. Domestic Violence, 2006, updated March, 2008 (Excel) 

Table A3. Folic Acid Use, 2006 (Excel)  

Table A4. Medi-Cal Health Insurance, 2006, updated March, 2008 (Excel)   

Table A5. Medical Home Before Pregnancy, 2006 (Excel) 

B.  During Pregnancy

Table B1. Smoking and Alcohol Use, 2006, updated March, 2008 (under construction)      

Table B2. Prenatal Care, 2006, updated March, 2008 (Excel)   

Table B3. Oral Health, 2006, updated March, 2008 (Excel)           

C.  After Birth

Table C1. Low Birthweight, Premature, 2006, updated March, 2008 (Excel)

Table C2. Breastfeeding, 2006 (Excel)   

D.  Characteristics of Women in MIHA

Table D1. Characteristics of Sample Overall, 2006 (Excel)   

Table D2. Characteristics by Age Group, 2006, updated March, 2008 (Excel) 

Table D3. Characteristics by Race-Ethnicity Group, 2006, updated March, 2008 (Excel) 

Table D4. Characteristics by Education Group, 2006, updated March, 2008 (Excel)    

Table D5. Characteristics by Income Group, 2006, updated March, 2008 (Excel)    

E.  How Representative is MIHA?

Table E1. Comparison of the MIHA Sample to All California Women with a Live Birth, 2006 (Excel)