Table 6 Odd ratios (OR) and 95% confidence intervals (CI) from a fully saturated discrete-time logistic regression model examining the risk for a subsequent cancer diagnosis within the cohorts with a primary cutaneous malignant melanoma (CMM) or squamous cell carcinoma (SCC)
From: New malignancies after squamous cell carcinoma and melanomas: a population-based study from Norway
| Â | CMM | SCC | ||
|---|---|---|---|---|
| Â | Events/Pyr1 | OR (95% CI) | Events/Pyr | OR (95% CI) |
Sex | Â | Â | Â | Â |
 Female | 2058/173 679 | 1.00 ref | 1893/81 108 | 1.00 ref |
 Male | 1938/115 144 | 1.51 (1.41,1.63) | 3719/94 533 | 1.90 (1.79,2.01) |
Age 2 | Â | Â | Â | Â |
 < 40 years | 80/31 862 | 1.00 ref | 19/3020 | 1.00 ref |
 40-59 years | 807/106 669 | 2.89 (2.29,3.65) | 222//17 362 | 2.28 (1.42,3.66) |
 ≥ 60 years | 3109/147 183 | 6.67 (5.31,8.39) | 5371/155 259 | 4.62 (2.93,7.29) |
Residential region 3 | Â | Â | Â | Â |
 North | 275/23 927 | 1.00 ref | 419/15 325 | 1.00 ref |
 Mid | 703/54 955 | 1.09 (0.95,1.26) | 1124/37 786 | 1.09 (0.98,1.23) |
 South | 3018/209 941 | 1.20 (1.06,1.36) | 4069/122 530 | 1.20 (1.08,1.33) |
Calendar period 2 | Â | Â | Â | Â |
 < 1965 | 6/2959 | 1.00 ref | 35/4411 | 1.00 ref |
 1965-1974 | 71/13 448 | 3.01 (1.30,6.98) | 168/10 542 | 2.51 (1.73,3.64) |
 1975-1984 | 276/34 380 | 4.92 (2.15,11.24) | 438/22 580 | 3.61 (2.50,5.20) |
 1985-1994 | 913/69 763 | 7.80 (3.43,17.34) | 1281/40 225 | 6.46 (4.52,9.24) |
 1995-2004 | 1707/112 983 | 8.88 (3.91,20.17) | 2364/64 765 | 7.76 (5.44,11.1) |
 ≥ 2004 | 1023/55 290 | 10.52 (4.63,23.9) | 1326/33 118 | 8.73 (6.10,12.5) |
Educational level 4 | Â | Â | Â | Â |
 ≤ Primary | 63/5193 | 1.00 ref | 178/6203 | 1.00 ref |
 Secondary | 1285/85 407 | 0.80 (0.61,1.04) | 2514/82 333 | 0.60 (0.50,0.71) |
 Some college | 1293/85 733 | 0.79 (0.60,1.05) | 1577/46 489 | 0.60 (0.50,0.72) |
 ≥ College degree | 1355/112 490 | 0.80 (0.61,1.05) | 1343/40 616 | 0.61 (0.51,0.74) |
Marital status 3 | Â | Â | Â | Â |
 Not married | 1089/84 671 | 1.00 ref | 2161/72 265 | 1.00 ref |
 Married | 2907/204 152 | 1.02 (0.94,1.10) | 3451/103 376 | 1.01 (0.95,1.08) |
Parental status 4 | Â | Â | Â | Â |
 No children | 881/68 530 | 1.00 ref | 1692/56 884 | 1.00 ref |
 Children | 3115/220 293 | 0.91 (0.84,0.99) | 3920/118 757 | 0.93 (0.87,0.99) |
Income (annual) 3 | Â | Â | Â | Â |
 $ 05 | 1586/81 524 | 1.00 ref | 3982/113 773 | 1.00 ref |
 $ 80–9 999 | 679/57 594 | 0.83 (0.75,0.91) | 715/24 518 | 0.85 (0.78,0.92) |
 $ 10 000–19 999 | 514/50 340 | 0.68 (0.61,0.75) | 300/12 099 | 0.76 (0.67,0.85) |
 $ 20 000–39 999 | 713/57 131 | 0.75 (0.68,0.82) | 334/13 692 | 0.65 (0.58,0.74) |
 $ ≥ 40 000 | 504/42 234 | 0.65 (0.58,0.73) | 281/11 559 | 0.59 (0.51,0.67) |