Table 2.
Characteristics of Pregnant Women Included in the Analytic Sample (n=1160) Compared to Women participants of the PEAPOD Study that were Excluded from the Analytic Sample (n=637) in a Study of Prenatal Depression and Diet Quality conducted in Kaiser Permanente Northern California between 2011-2013.
| Excluded from study sample | Current Sample | ||
|---|---|---|---|
| n (%) | n (%) | ||
| 637 | 1160 | p-valuea | |
| Maternal age (at pregnancy start) | |||
| < 35 years age | 385 (60.4) | 704 (60.7) | 0.978 |
| 35+ years of age | 247 (38.8) | 446 (38.4) | |
| Missing | 5 (0.8) | 10 (0.9) | |
| Marital status | |||
| Single/Divorced/Separated | 34 (5.3) | 40 (3.4) | 0.081 |
| Married/Living with partner | 601 (94.3) | 1119 (96.5) | |
| Missing | 2 (0.3) | 1 (0.1) | |
| Maternal Education | |||
| < College | 40 (6.3) | 61 (5.3) | 0.349 |
| College + | 595 (93.4) | 1098 (94.7) | |
| Missing | 2 (0.3) | 1 (0.1) | |
| Race/Ethnicity | |||
| Non-Hispanic White | 329 (51.6) | 631 (54.4) | 0.684 |
| Hispanic | 119 (18.7) | 213 (18.4) | |
| Asian/Pacific Islander | 118 (18.5) | 195 (16.8) | |
| Other/Unknownb | 71 (11.1) | 121 (10.4) | |
| Parity | |||
| 1+ | 375 (58.9) | 732 (63.1) | 0.086 |
| 0 | 262 (41.1) | 428 (36.9) | |
| Pre-pregnancy BMI | |||
| Underweight (<18.5 kg/m2) | 19 (3.0) | 32 (2.8) | 0.099 |
| Normal weight (18.5 - < 25 kg/m2) | 356 (55.9) | 626 (54.0) | |
| Overweight (25 - < 30 kg/m2) | 137 (21.5) | 270 (23.3) | |
| Obese (≥30 kg/m2) | 115 (18.1) | 227 (19.6) | |
| Missing | 10 (1.6) | 5 (0.4) | |
| Alcohol use during pregnancy | |||
| Yes | 148 (23.2) | 240 (20.7) | 0.232 |
| No | 489 (76.8) | 920 (79.3) | |
| Smoking during pregnancy | |||
| Yes | 13 (2.0) | 21 (1.8) | 0.871 |
| No | 624 (98.0) | 1139 (98.2) | |
| Prenatal Vitamin Use | |||
| Yes | 612 (96.1) | 1129 (97.3) | 0.041 |
| No | 25 (3.9) | 31 (2.7) | |
| Diet Qualityc | |||
| Poor quality diet | 168 (26.4) | 291 (25.1) | 0.588 |
| Good quality diet | 469 (73.6) | 869 (74.9) |
Chi-square test p-value.
Other/Unknown represents: Non-Hispanic Black, Native American/Alaskan Native, Multiple races, Other, Unknown or Not Reported.
Diet was assessed using the Healthy Eating Index (HEI-2010) score calculated from self-report dietary intake using a modified Block Food Frequency Questionnaire (FFQ). Poor quality diet was defined by scores that ranged in the lowest quartile (≤68.3). Good quality diet was defined by scores that ranged in the top three quartiles.