Considering the claim:
Lader ... his Abortion book ... along with two error-ridden abortion history papers by NARAL attorney Cyril Means, provide the underlying structure for Roe v. Wade and are explicitly cited in the opinion 14 times
the Roe v. Wade decision cites to:
Abortion by Lawrence Lader in footnotes 9, 17, 21, 26, 33, 44, 57 and 58 (8 times)
The Law of New York Concerning Abortion and the Status of the Foetus, 1664-1968: A Case of Cessation of Constitutionality by Cyril C. Means, Jr. in footnotes 21, 22 and 47 (3 times) and
The Phoenix of Abortional Freedom: Is a Penumbral
or Ninth-Amendment Right About to Arise from the Nineteenth Century Legislative Ashes of a Fourteenth-Century Common-Law
Liberty? by Cyril C. Means, Jr. in footnotes 26, 33, 42 and 47 (4 times).
So there are 15 instances of citations to the 3 references mentioned in the claim.
The title of the question improperly combines two separate claims. None of the quoted claims say that the decision relied upon "statistics" from the 3 references.
Mostly, the decision relied upon the 3 references for legal and religious views.
For example footnote 26 is:
Means, The Phoenix of Abortional Freedom: Is a Penumbral
or Ninth-Amendment Right About to Arise from the NineteenthCentury Legislative Ashes of a Fourteenth-Century Common-Law
Liberty?, 17 N. Y. L. F. 335 (1971) (hereinafter Means II).
The author examines the two principal precedents cited marginally
by Coke, both contrary to his dictum, and traces the treatment of
these and other cases by earlier commentators. He concludes that
Coke, who himself participated as an advocate in an abortion case
in 1601, may have intentionally misstated the law. The author even
suggests a reason: Coke's strong feelings against abortion, coupled
with his determination to assert common-law (secular) jurisdiction
to assess penalties for an offense that traditionally had been an exclusively ecclesiastical or canon-law crime. See also Lader 78-79, who
notes that some scholars doubt that the common law ever was applied to abortion; that the English ecclesiastical courts seem to have
lost interest in the problem after 1527; and that the preamble to the
English legislation of 1803, 43 Geo. 3, c. 58, § 1, referred to in
the text, infra, at 136, states that "no adequate means have been
hitherto provided for the prevention and punishment of such offenses."
Footnote 57 says, in part:
For the position of the National Council of Churches and of other denominations, see Lader 99-101.
The one place that the decision slightly relies on Lader for statistics concerns footnote 44.
This footnote is associated with the sentence in the body of the text:
Mortality rates for women undergoing early abortions, where the
procedure is legal, appear to be as low as or lower
than the rates for normal childbirth.
Overall, the decision, though relying on the 3 references 15 times, does not overtly rely on the references for any specific false statistics.