TABLE 6. Number, percentage, and proportion of infants born with use of assisted reproductive technology,* by preterm gestational age category and female patient’s reporting area of residence† at time of treatment — United States and Puerto Rico, 2015.
| Patient’s reporting area of residence | <37 wks (PTB) |
<32 wks (VPTB) |
||||
|---|---|---|---|---|---|---|
| ART infants |
All infants§ |
Proportion of ART PTB infants among all PTB infants (%) | ART infants |
All infants§ |
Proportion of ART VPTB infants among all VPTB infants (%) | |
| No. (%) | No. (%) | No. (%) | No. (%) | |||
| Alabama |
198 (45.8) |
7,544 (12.6) |
2.6 |
38 (8.8) |
1,268 (2.1) |
3.0 |
| Alaska |
30 (34.9) |
1,004 (8.9) |
3.0 |
— (—)¶ |
130 (1.2) |
—¶ |
| Arizona** |
359 (37.6) |
7,724 (9.0) |
4.6 |
59 (6.2) |
1,121 (1.3) |
5.3 |
| Arkansas |
66 (30.6) |
4,201 (10.8) |
1.6 |
8 (3.7) |
683 (1.8) |
1.2 |
| California** |
2,476 (28.3) |
41,600 (8.5) |
6.0 |
401 (4.6) |
6,386 (1.3) |
6.3 |
| Colorado** |
333 (31.1) |
5,770 (8.7) |
5.8 |
51 (4.8) |
806 (1.2) |
6.3 |
| Connecticut |
371 (28.6) |
3,340 (9.3) |
11.1 |
65 (5.0) |
599 (1.7) |
10.9 |
| Delaware |
65 (25.1) |
1,093 (9.8) |
5.9 |
12 (4.6) |
219 (2.0) |
5.5 |
| District of Columbia |
75 (21.1) |
979 (10.2) |
7.7 |
12 (3.4) |
199 (2.1) |
6.0 |
| Florida |
962 (32.6) |
22,407 (10.0) |
4.3 |
177 (6.0) |
3,984 (1.8) |
4.4 |
| Georgia |
526 (33.5) |
14,133 (10.8) |
3.7 |
80 (5.1) |
2,567 (2.0) |
3.1 |
| Hawaii** |
189 (37.4) |
1,861 (10.1) |
10.2 |
30 (5.9) |
282 (1.5) |
10.6 |
| Idaho |
100 (41.0) |
1,852 (8.1) |
5.4 |
9 (3.7) |
255 (1.1) |
3.5 |
| Illinois |
1,278 (31.7) |
16,048 (10.1) |
8.0 |
236 (5.9) |
2,784 (1.8) |
8.5 |
| Indiana |
318 (37.9) |
8,061 (9.6) |
3.9 |
68 (8.1) |
1,349 (1.6) |
5.0 |
| Iowa |
221 (34.2) |
3,559 (9.0) |
6.2 |
41 (6.3) |
558 (1.4) |
7.3 |
| Kansas |
140 (35.6) |
3,426 (8.8) |
4.1 |
17 (4.3) |
526 (1.3) |
3.2 |
| Kentucky |
186 (39.0) |
6,026 (10.8) |
3.1 |
21 (4.4) |
870 (1.6) |
2.4 |
| Louisiana |
223 (44.2) |
7,964 (12.3) |
2.8 |
38 (7.5) |
1,414 (2.2) |
2.7 |
| Maine |
43 (30.7) |
1,062 (8.4) |
4.0 |
8 (5.7) |
187 (1.5) |
4.3 |
| Maryland |
458 (24.3) |
7,380 (10.0) |
6.2 |
82 (4.4) |
1,355 (1.8) |
6.1 |
| Massachusetts |
749 (23.2) |
6,002 (8.4) |
12.5 |
119 (3.7) |
999 (1.4) |
11.9 |
| Michigan |
514 (34.9) |
11,200 (9.9) |
4.6 |
92 (6.3) |
1,963 (1.7) |
4.7 |
| Minnesota |
336 (30.4) |
5,906 (8.5) |
5.7 |
56 (5.1) |
923 (1.3) |
6.1 |
| Mississippi |
104 (40.0) |
4,999 (13.0) |
2.1 |
23 (8.8) |
879 (2.3) |
2.6 |
| Missouri |
321 (36.0) |
7,504 (10.0) |
4.3 |
59 (6.6) |
1,246 (1.7) |
4.7 |
| Montana |
32 (24.2) |
1,058 (8.4) |
3.0 |
— (—)¶ |
123 (1.0) |
—¶ |
| Nebraska |
135 (35.4) |
2,629 (9.9) |
5.1 |
11 (2.9) |
354 (1.3) |
3.1 |
| Nevada |
163 (30.8) |
3,604 (9.9) |
4.5 |
24 (4.5) |
542 (1.5) |
4.4 |
| New Hampshire** |
67 (22.0) |
977 (7.9) |
6.9 |
12 (3.9) |
146 (1.2) |
8.2 |
| New Jersey |
1,080 (30.0) |
10,064 (9.8) |
10.7 |
166 (4.6) |
1,630 (1.6) |
10.2 |
| New Mexico |
44 (37.0) |
2,459 (9.5) |
1.8 |
10 (8.4) |
332 (1.3) |
3.0 |
| New York |
1,663 (25.9) |
20,531 (8.7) |
8.1 |
272 (4.2) |
3,536 (1.5) |
7.7 |
| North Carolina |
481 (30.9) |
12,297 (10.2) |
3.9 |
80 (5.1) |
2,351 (1.9) |
3.4 |
| North Dakota |
45 (32.8) |
950 (8.4) |
4.7 |
16 (11.7) |
149 (1.3) |
10.7 |
| Ohio |
581 (33.8) |
14,300 (10.3) |
4.1 |
67 (3.9) |
2,393 (1.7) |
2.8 |
| Oklahoma |
174 (42.0) |
5,485 (10.3) |
3.2 |
25 (6.0) |
820 (1.5) |
3.0 |
| Oregon |
255 (33.1) |
3,459 (7.6) |
7.4 |
41 (5.3) |
521 (1.1) |
7.9 |
| Pennsylvania |
671 (29.3) |
13,224 (9.4) |
5.1 |
99 (4.3) |
2,257 (1.6) |
4.4 |
| Puerto Rico |
45 (44.6) |
4,663 (15.0) |
1.0 |
15 (14.9) |
698 (2.2) |
2.1 |
| Rhode Island |
68 (25.4) |
945 (8.6) |
7.2 |
11 (4.1) |
152 (1.4) |
7.2 |
| South Carolina |
210 (34.7) |
6,429 (11.1) |
3.3 |
37 (6.1) |
1,162 (2.0) |
3.2 |
| South Dakota |
35 (34.3) |
1,045 (8.5) |
3.3 |
— (—)¶ |
131 (1.1) |
—¶ |
| Tennessee |
252 (36.3) |
8,959 (11.0) |
2.8 |
43 (6.2) |
1,443 (1.8) |
3.0 |
| Texas |
2,234 (38.9) |
41,019 (10.2) |
5.4 |
414 (7.2) |
6,470 (1.6) |
6.4 |
| Utah** |
376 (39.5) |
4,722 (9.3) |
8.0 |
70 (7.4) |
652 (1.3) |
10.7 |
| Vermont |
8 (11.6) |
429 (7.3) |
1.9 |
0 (0) |
70 (1.2) |
0 |
| Virginia |
550 (26.8) |
9,549 (9.2) |
5.8 |
90 (4.4) |
1,715 (1.7) |
5.2 |
| Washington |
363 (26.2) |
7,216 (8.1) |
5.0 |
60 (4.3) |
1,155 (1.3) |
5.2 |
| West Virginia |
63 (44.4) |
2,223 (11.2) |
2.8 |
14 (9.9) |
326 (1.6) |
4.3 |
| Wisconsin |
300 (35.5) |
6,271 (9.4) |
4.8 |
58 (6.9) |
1,001 (1.5) |
5.8 |
| Wyoming |
29 (35.8) |
762 (9.8) |
3.8 |
— (—)¶ |
82 (1.1) |
—¶ |
| Total | 20,565 (31.2) | 3,87,914 (9.7) | 5.3 | 3,447 (5.2) | 63,763 (1.6) | 5.4 |
Abbreviations: ART = assisted reproductive technology; PTB = preterm birth; VPTB = very preterm birth.
* ART totals include infants conceived from ART procedures performed in 2014 and born in 2015 and infants conceived from ART procedures performed in 2015 and born in 2015. Total ART births exclude nonresidents and include only infants with gestational age data available.
† In cases of missing residency data (0.8%), the patient’s residence was assigned as the location in which the ART procedure was performed.
§ U.S. births include nonresidents. Source: Martin JA, Hamilton BE, Osterman MJ, Driscoll AK, Mathews TJ. Births: final data for 2015. Natl Vital Stat Rep 2017;66:1–70.
¶ To protect confidentiality, cells with values of 1–4 for ART infants and cells with values of 0–9 for all infants are suppressed. Also suppressed are data that can be used to derive suppressed cell values. These values are included in the totals.
** In six states, >2% of residency information was missing for procedures performed: Arizona (4.7%), California (3.3%), Colorado (7.5%), Hawaii (5.4%), New Hampshire (3.5%), and Utah (5.8%). Overall, residency information was missing for 1,468 (0.8%) procedures performed and 623 (1.1%) live-birth deliveries.