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Table 2 Effect estimates for simultaneous joint-change sensitivity analyses

From: The associations between environmental quality and preterm birth in the United States, 2000–2005: a cross-sectional analysis

  

County-level prevalence differences

Individual-level odds ratios

Strata

 

EQI

Joint-change

EQI

Joint-change

Overall

Q1

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Q2

−0.0021 (−0.0052, 0.001)

−0.0047 (−0.0112, 0.0018)

0.96 (0.94, 0.99)

0.93 (0.89, 0.99)

Q3

−0.0038 (−0.007, −0.0007)

−0.0123 (−0.0186, −0.0059)

0.93 (0.91, 0.95)

0.90 (0.85, 0.94)

Q4

−0.0098 (−0.013, −0.0066)

−0.0178 (−0.0241, −0.0115)

0.87 (0.85, 0.89)

0.83 (0.79, 0.87)

Q5

−0.0166 (−0.0198, −0.0134)

−0.0312 (−0.0365, −0.0259)

0.82 (0.80, 0.84)

0.74 (0.71, 0.77)

Metropolitan urbanized

Q1

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Q2

0.0025 (−0.002, 0.0071)

0.0042 (−0.0052, 0.0135)

1.01 (0.98, 1.05)

1.07 (1.00, 1.15)

Q3

−0.0092 (−0.0138, −0.0046)

−0.003 (−0.0122, 0.0062)

0.92 (0.88, 0.95)

1.02 (.95, 1.1)

Q4

−0.012 (−0.0166, −0.0075)

0.0033 (−0.0059, 0.0126)

0.90 (0.87, 0.93)

0.98 (0.91, 1.05)

Q5

−0.0207 (−0.0253, −0.0161)

0.0033 (−0.0065, 0.0131)

0.83 (0.80, 0.85)

0.94 (0.87, 1.01)

Non-metropolitan urbanized

Q1

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Q2

0.0049 (−0.0023, 0.0122)

0.0078 (−0.006, 0.0217)

0.99 (0.93, 1.05)

1.00 (0.88, 1.15)

Q3

0.0046 (−0.0035, 0.0126)

−0.0154 (−0.0307, 0)

0.96 (0.90, 1.02)

0.82 (0.71, 0.94)

Q4

−0.001 (−0.0094, 0.0074)

−0.0044 (−0.0183, 0.0095)

0.90 (0.85, 0.96)

0.84 (0.74, 0.95)

Q5

−0.0091 (−0.0176, −0.0005)

−0.0069 (−0.0215, 0.0077)

0.82 (0.77, 0.88)

0.79 (0.70, 0.90)

Less urban

Q1

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Q2

−0.0046 (−0.0093, 0.0002)

−0.0059 (−0.0152, 0.0034)

0.97 (0.93, 1.01)

0.93 (0.85, 1.02)

Q3

−0.0105 (−0.0155, −0.0055)

−0.0179 (−0.0273, −0.0085)

0.89 (0.85, 0.93)

0.82 (0.75, 0.90)

Q4

−0.0183 (−0.0235, −0.013)

−0.0231 (−0.0329, −0.0134)

0.82 (0.79, 0.86)

0.75 (0.68, 0.82)

Q5

−0.0249 (−0.0303, −0.0195)

−0.0253 (−0.0346, −0.0159)

0.76 (0.72, 0.79)

0.71 (0.65, 0.78)

Rural/isolated

Q1

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Q2

−0.0016 (−0.0112, 0.0081)

0.0104 (−0.0088, 0.0296)

0.94 (0.88, 1.01)

1.03 (0.88, 1.20)

Q3

−0.0052 (−0.0151, 0.0048)

0.0012 (−0.0193, 0.0217)

0.87 (0.80, 0.93)

0.87 (0.73, 1.02)

Q4

−0.0145 (−0.0248, −0.0043)

−0.009 (−0.0305, 0.0126)

0.81 (0.75, 0.87)

0.80 (0.67, 0.94)

Q5

−0.0222 (−0.0326, −0.0117)

−0.0073 (−0.027, 0.0125)

0.73 (0.68, 0.79)

0.81 (0.70, 0.95)