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. Author manuscript; available in PMC: 2023 Mar 1.
Published in final edited form as: Fertil Steril. 2022 Jan 17;117(3):593–602. doi: 10.1016/j.fertnstert.2021.11.012

Table 1.

Demographics for in-state live deliveries to Massachusetts women aged ≥ 18 years privately insured at delivery, 7/1/2004–6/30/2017

ALL Fertile Unassisted Subfertile Non-ART Medically Assisted Reproduction ART
n % n % n % n % n %
Total deliveries 492,515 100.0 448,227 91.01 8,675 1.8 7,811 1.6 27,802 5.6
Maternal age at delivery
 Mean (SD) 32.13 (4.72) 31.81 (4.62) 34.01 (4.38) 35.40 (3.87) 35.83 (4.50)
Maternal race/ethnicity
 Hispanic 26,173 5.31 24,457 5.46 328 3.78 280 3.58 1,108 3.99
 Non-Hispanic White 389,260 79.04 352,391 78.62 7,421 85.54 6,505 83.28 22,943 82.52
 Non-Hispanic Black 21,461 4.36 20,221 4.51 232 2.67 178 2.28 830 2.99
 Non-Hispanic Asian 48,638 9.88 44,770 9.99 575 6.63 764 9.78 2,529 9.10
 Other 6,983 1.42 6,388 1.43 119 1.37 84 1.08 392 1.41
Maternal highest level of education
 < HS/HS graduate 84,592 17.18 80,453 17.95 948 10.93 641 8.21 2,550 9.17
 Some college 67,269 13.66 62,269 13.89 1,050 12.10 886 11.34 3,064 11.02
 College graduate 337,568 68.54 302,775 67.55 6,608 76.17 6,246 79.96 21,939 78.91
 Missing 3,086 0.63 2,730 0.61 69 0.80 38 0.49 249 0.90
Marital Status
 Married 438,037 88.94 395,603 88.26 8,442 97.31 7,394 94.66 26,598 95.67
Parity
 1 234,090 47.53 212,060 47.31 1,280 14.76 4,794 61.37 15,956 57.39
 2 179,074 36.36 163,064 36.38 4,524 52.15 2,290 29.32 9,196 33.08
 3–16 77,664 15.77 71,576 15.97 2,819 32.50 708 9.06 2,561 9.21
 Missing 1,687 0.34 1,527 0.34 52 0.60 19 0.24 89 0.32
Plurality
 Singleton 479,031 97.26 442,098 98.63 8,410 96.95 6,742 86.31 21,781 78.34
 Twin or High Order Multiples 13,484 2.74 6,129 1.37 265 3.05 1,069 13.69 6,021 21.66
History of chronic conditions
 Hypertension 11,903 2.42 10,287 2.30 241 2.78 283 3.62 1,092 3.93
 Diabetes 30,825 6.26 26,876 6.00 678 7.82 761 9.74 2,510 9.03
Year of Delivery
 2004–2007 155,747 31.62 144,669 32.28 2,258 26.03 1,999 25.59 6,821 24.53
 2008–2010 119,909 24.35 110,269 24.60 2,064 23.79 1,110 14.21 6,466 23.26
 2011–2013 99,260 20.15 89,340 19.93 1,717 19.79 1,965 25.16 6,238 22.44
 2014–2017 117,599 23.88 103,949 23.19 2,636 30.39 2,737 35.04 8,277 29.77
Number of deliveries per women analyzed
 Range 1–10 1–10 1–6 1–6 1–6
 Mean (SD) 1.80 (0.78) 1.81 (0.79) 2.08 (0.76) 1.62 (0.70) 1.60 (0.67)
 1 192,549 39.10 173,130 38.63 1,755 20.23 3,847 49.25 13,817 49.70
 2 222,778 45.23 203,079 45.31 4,820 55.56 3,216 41.17 11,663 41.95
 3–10 77,188 15.67 72,018 16.07 2,100 24.21 748 9.58 2,322 8.35
Birth weight1
 < 1500 gms 5,364 1.06 3,476 0.76 94 1.05 343 3.82 1,451 4.27
 1500–2499 gms 29,344 5.80 20,895 4.60 514 5.75 1,322 14.74 6,613 19.45
 >=2500 gms 470,155 92.85 428,751 94.35 8,288 92.66 7,278 81.14 25,838 75.98
 Missing 1,483 0.29 1,301 0.29 49 0.55 27 0.30 106 0.31
Birth weight (singletons only)
 < 1500 gms 3,014 0.63 294 1.35 74 1.10 41 0.49 2,605 0.59
 1500–2499 gms 17,674 3.69 1,351 6.20 344 5.10 283 3.37 15,696 3.55
 >=2500 gms 456,956 95.39 20,075 92.17 6,299 93.43 8,041 95.61 422,541 95.58
 Missing 1,387 0.29 61 0.28 25 0.37 45 0.54 1,256 0.28
1.

Total number of infants= 506,346