Table 2.
Factors affecting gestational age at first visit and return to clinic
| Gestational age at first visit (weeks) | Returned to clinic at least once | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Bivariate analyses | Multivariable analyses | Bivariate analyses | Multivariable analyses | ||||||
| Factor | N | Mean gestational age (SD) | p‐value | β (SE) | p‐value | OR (95% CI) | p‐value | aOR (95% CI) | p‐value |
| HIV status at first visit | |||||||||
| Negative | 1545 | 22.4 (6.0) | <0.0001 | Ref. | <0.0001 | Ref. | <0.0001 | Ref. | <0.001 |
| Newly positive | 143 | 21.4 (5.7) | −0.80 (0.55) | 0.74 (0.51, 1.07) | 0.62 (0.42, 0.92) | ||||
| Known positive | 413 | 18.6 (6.5) | −3.60 (0.36) | 2.38 (1.69, 3.14) | 1.85 (1.32, 2.58) | ||||
| Marital status | |||||||||
| Married | 1785 | 21.3 (6.4) | <0.0001 | Ref. | <0.0001 | Ref. | <0.0001 | Ref. | <0.001 |
| Prev. married | 99 | 22.7 (5.3) | 0.70 (0.66) | 0.55 (0.35, 0.85) | 0.56 (0.35, 0.90) | ||||
| Unmarried | 225 | 23.8 (5.5) | 2.07 (0.47) | 0.38 (0.29, 0.52) | 0.49 (0.35, 0.69) | ||||
| LMP yearb | |||||||||
| 2011 | 519 | 22.3 (5.9) | <0.05 | Ref. | <0.05 | Ref. | <0.05 | Ref. | 0.159 |
| 2012 | 738 | 21.7 (6.3) | −0.81 (0.36) | 0.92 (0.70, 1.22) | 0.92 (0.68, 1.23) | ||||
| 2013 | 888 | 21.2 (6.4) | −1.29 (0.35) | 0.74 (0.57, 0.96) | 0.77 (0.58, 1.02) | ||||
| Age of patientb | |||||||||
| ≤15 years | 124 | 23.4 (6.0) | <0.0001 | Ref. | 0.437 | Ref. | <0.0001 | Ref. | 0.052 |
| 16 to 20 years | 649 | 22.4 (5.9) | −0.49 (0.63) | 1.18 (0.78, 1.78) | 1.06 (0.68, 1.65) | ||||
| 21 to 30 years | 1147 | 21.2 (6.4) | −0.28 (0.63) | 1.89 (1.27, 2.8) | 1.33 (0.84, 2.10) | ||||
| ≥31 years | 225 | 20.8 (6.8) | 0.04 (0.75) | 2.97 (1.75, 5.05) | 1.87 (1.04, 3.39) | ||||
| Village distance from clinicb | |||||||||
| ≤5 km | 1598 | 21.7 (6.3) | <0.05 | Ref | 0.150 | Ref. | 0.768 | Ref. | 0.714 |
| 6 to 15 km | 334 | 21.9 (6.1) | 0.52 (0.37) | 1.09 (0.82, 1.45) | 1.07 (0.79, 1.44) | ||||
| 16 to 30 km | 93 | 18.8 (6.3) | −1.55 (0.66) | 0.99 (0.60, 1.61) | 0.78 (0.46, 1.34) | ||||
| ≥31 km | 21 | 18.1 (5.4) | −2.36 (1.34) | 0.98 (0.35, 2.69) | 0.74 (0.26, 2.12) | ||||
| Paritya,b | |||||||||
| Primigravid | 602 | 21.5 (6.0) | 0.441 | N/A | N/A | Ref. | <0.0001 | N/A | N/A |
| 2 | 530 | 21.7 (6.4) | N/A | 1.4 (1.07, 1.84) | N/A | ||||
| 3 | 401 | 21.2 (6.5) | N/A | 1.59 (1.18, 2.15) | N/A | ||||
| 4 | 608 | 21.9 (6.2) | N/A | 1.74 (1.33, 2.28) | N/A | ||||
CI, Confidence interval; SD, standard deviation; SE, standard error; β, regression beta coefficient; LMP, last menstrual period; Prev., previously; N/A, not applicable; OR, odds ratio; aOR, adjusted odds ratio; Ref., reference.
a
Multivariable analyses controlled for all other variables in the table except for parity because of its collinearity with age.
b
Reported p‐values are for trend.