Table 4

Sensitivity, specificity, and predictive values of a modified five item criteria including age, weight, disease activity, immobility, and ever use of corticosteriods for the bone density cut off categories T score ≤−1 SD, T score ≤−2.5 SD (World Health Organisation osteoporosis definition⁶), and Z score ≤−1 SD tested on all 287 patients with RA (n=287), and on subgroups of patients according to sex (235 women and 52 men) and menopausal status (72 premenopausal and 163 postmenopausal)

	T score ≤−1 SD	T score ≤−2.5 SD	Z score ≤−1 SD
PPV=Positive predictive value; NPV=negative predictive value.
Sensitivity (%):
All	70	82	70
Women	70	82	72
Premenopausal	42	100	52
Postmenopausal	77	80	80
Men	67	83	64
Specificity (%):
All	56	45	45
Women	56	45	46
Premenopausal	78	74	80
Postmenopausal	35	29	30
Men	60	45	40
PPV (%):
All	76	29	41
Women	74	29	40
Premenopausal	59	18	55
Postmenopausal	77	31	38
Men	88	31	44
NPV (%):
All	47	90	73
Women	51	90	76
Premenopausal	64	100	78
Postmenopausal	35	79	74
Men	30	90	60